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Look carefully at shipping charges. When I've seen "prices" that were much lower than comparable products they've often been accompanied by sky-high shipping prices; a $20 item with a shipping cost of $80 adds up to the same $100 as a $90 item with a shipping cost of $10.

Generally one of two cases.

But I'll briefly mention a third: Go-backs. When you return an item, well for any reason, they don't bother noting the reason, and if the reason is "defective" they do not take a swing at fixing it. They throw it in a bin with all other go-backs, and auction off the bin. People buy these bins and resell the items on eBay. Since they are one-offs and not a continuous supply, eBay is the better platform.

Counterfeit goods vs the real McCoy

If you buy an item from Amazon Proper, meaning "Sold by and shipped from Amazon.com", you are fairly likely to get a genuine, legal product licensed for sale in this country. Generally, Amazon Proper has the same quality filters as US retail stores - for instance City Electric will only sell you LED fixtures that are UL listed and pass FCC Part 18 requirements, and usually so does Amazon Proper.

Whereas on eBay/Alibaba/Amazon Marketplace, you get several things, because many of those genuine, legal goods are made by contractors in Asia using subcontractors.

• Someone sets up a factory to make counterfeit goods, possibly using stolen plans or replica dies (the subcontractor who made the dies for the manufacturer's contractor, makes a few extras for his buddy who sets up a counterfeit line).


• QA rejects from the genuine article's assembly line that have been dumpster-dived.


• Genuine items that have been stolen from the factory.

Since the QA and stolen items are "one-offs", eBay is the better platform.

Amazon Prime shipping vs. ePacket delivery

For people with enough money, Amazon will cheerfully give open access to their warehouse infrastructure, even for companies who don't want to be part of Amazon Marketplace (the "wild west"). Someone like FMC Mining might use this to ship specialty drill bits to their 9 customers. But if you do want to be part of Amazon Marketplace, your item qualifies for Prime Shipping -- even though it's Marketplace! And that is attractive to many consumers. However, this "platform access" is very expensive. It is particularly harsh on small/inexpensive items.

If you're like me, you tend to look at mainly/only items with the Prime delivery feature. The sellers of cheap Cheese junk know that. So they pay the premium to have their products in the Warehouse/Prime system, and tack it on to the cost of the item. So it's quite a premium. Yes, this is you paying for Prime. Often the same seller (looking at you, uxcell) will also offer the same item on eBay.

In that case, it ships via "ePacket delivery" from China, which is super-cheap. This is a weird service where the US Postal Service actually has a presence in Shenzhen (right next to Hong Kong) and these "ePackets" are essentially delivered right into USPS hands. Perhaps, like TSA Preclearance, they also clear customs - a lot easier to clear "the usual daily truckload" of 2000 packets of entirely LED lights at the truck in one batch, rather than one at a time in fifty US ports of entry.

EBay items are typically ePacket.

The contrast in price between ePacket and Amazon Fulfillment Services is enough to give you whiplash, and is enough to explain the price difference between eBay and Amazon [Prime].

A possibility may be that you're dealing with drop shipping. Sometimes this also happens on Amazon. Usually, if an item is sold on Amazon and ships from the US (or your country), this means that someone has taken on the cost and logistics of having the item shipped to them, warehousing it, and shipping it on to the buyer from somewhere in proximity to their customer base. If the item is sold on Amazon Prime, you can be assured that this is the case.

On eBay (more-so than on Amazon, in my opinion), it's very common to see items that are shipped directly from China. The seller never possesses the item. They're just taking your payment and placing an order directly with the manufacturer who ships the item(s) to you. This allows the seller to significantly reduce the cost of doing business. For the customer, it means that your item may take weeks rather than days to reach you and if you have a problem with it, the return process to China is may be much more challenging, possibly to the point where it isn't worth pursuing it. Oftentimes, that's what the price differential buys you.

Without providing a specific example, I can only give a generalised answer with some possible reasons:

While Ebay does have buy-it-now products, predominantly it is an auction with lower starting prices, and therefore items may often not reach the sale price or RRP. Ebay includes second-hand items, and people forward-selling unwanted brand new items that they have recently been given or purchased. Also, Ebay may have more competition in various industries especially electronics, and attracts OEMs.

Amazon sells brand new items, and attracts more brand names and authorised resellers of brand names. Also Amazon is a more onerous and lengthy process to be accepted, can be difficult for OEM products, and this is a barrier to some lower priced sellers.

One other possibility that I haven't seen mentioned is that most sellers have a 'manufacturer's suggested retail price' (MSRP) associated with each product. Retailers will have deals with the manufacturer where they cannot sell at less than that price unless they negotiate an exemption. What the retailers pay for those goods is typically much less than this price.

Often the retailer would like to sell at a lower price because they think they will sell more units and make up the difference e.g. undercutting the competition. But if they do that without the manufacturer's permission, it would endanger their relationship and possibly and/or be a breach of contract.

It's possible that what you see on Amazon is the MSRP. The fact that the price there matches the manufacturer's website tends to suggest that this is the case and the Ebay seller is not subject to the MSRP or is using this as a back-channel to get rid of excess inventory.

Most of the other answers here are also plausible. This is just one possibility.

Marketplace sites (including both ebay and Amazon) are full of sellers selling questionable merchandise. Sometimes it is counterfiet. Sometimes it is last years model. Sometimes it is a "grey import" of a product intended for a different country. Sometimes it is a used product advertised as new.

The difference between eBay and Amazon is that while both have marketplace operations, Amazon are also a seller in their own right. This means that big brands have far more leverage over Amazon than over ebay.

As I understand it this means that there are certain brands that the general public simply can't sell on Amazon (At least as "new") because Amazon lets the brand owner remove listings at will and the brand owner removes listings that don't come from Authorised dealers.

Because seller vendors sites like Ebay and Amazon are some of the biggest gateways to fraud on the internet and everyone thinks of them like common household names.

These sites below are sources for many people who buy knock off products and sell them on venues like Amazon and Ebay every day, all day, and there's very little regulation on the subject.

http://www.alibaba.com/

https://www.aliexpress.com

https://www.dhgate.com/

If you EVER want to buy anything on a website that allows anyone to register and sell things, search on alibaba, aliexpress and dhgate. If you can find it there, it IS a knockoff. Even if the statistics on that are not 100% correct, the frame of mind you should adopt is that they are knock offs plain and simple.

If you're OK with that, then go ahead and buy it up. Otherwise, order from a legit source like the company's home page, best buy, etc. NOT Amazon. NOT ebay. Or heaven forbid just go to a store if they exist offline anymore.

Also keep in mind that sites that source knock offs come and go. The ones I mentioned may not be the go-to source anymore but I promise you the wholesale distributors of knock off products always have their channels to get the products here. It will be a long time before sites like Amazon have this epidemic under control. In the meantime, they tend to have excellent customer service principals and return policies so take advantage of those.

If the price is too good to be true, it is definitely because that product was manufactured and sold for a lot less. Almost positively not through the rights holders, but not necessarily at a loss of quality. It just depends on what you're getting.

eBay has lots of fake headphones. Expensive headphones are a perfect product for counterfeiting - you only need to recreate their case and a lot of people will never notice that something is wrong.

I personally had an experience of buying headphones from eBay which were advertised as new, and cost about 20%-30% less than in a retail store.

When they arrived, I was surprised by the bad sound quality they had. They cost about $150, but had a sound of the cheapest $10 headphones.

The look & feel of the headphones themselves was almost genuine (at least I couldn't find a difference), but the included manual and other accessories definitely looked like a copy.

In the end, I was able to get a refund by following eBay's dispute resolution process.

Another scenario that I haven't seen in an answer so far is one that a family member of mine encountered recently:

The "seller" purchases an item at full price using stolen credit card information and has it shipped directly to you. They collect the steeply-discounted price from the buyer through an online payment system and pocket the money minus any transaction fees.

This could be what has happened when the following are true:

• The genuine item is received from a well-known distributor such as Amazon,
  CDW, etc.,


• The customer on the enclosed invoice is someone the buyer has never heard of, and


• The price on the enclosed invoice is higher than what was paid by the buyer