8:34 p.m. on April 3, 2012 (EDT)
OK, we're talking about some very different situations here.
1. First, if you buy a brand name product from a company with a presence in the US, you have a company with an established reputation and they are relatively easy to seek legal redress from, regardless of where a product is made. It matters some if you buy from a retailer, like REI, or an individual, as on eBay, but either way the company whose brand is on the product can be accessed for redress.
2. Second, if you buy a product via eBay from an individual seller made by a company with no real presence in the US but with a good reputation, you at least have that company's reputation to go on. Kovea and Fire Maple for example have pretty good reputations. In particular if you buy a specific product that has been out for a while and has gotten good reviews, you have a little bit more to go on. For example, the Kovea Supalite gets good marks as does the Fire Maple FMS-116T (aka the Monatauk Gnat). Seeking legal redress against a company with no presence in the US would be difficult if you buy from an individual based overseas via eBay. If you buy from a US retailer, you could seek redress from the retailer.
3. Third, you could buy a brand with a lesser reputation, like Bulin. Bulin has had a number of problems associated with it and has had a number of products banned in the EU. Bulin and Fire Maple may be owned by the same company, but they are not the same any more than Volkswagen and Porche are the same even though VW and Porche were both under the same ownership (or at least they were at one time). Again, seeking legal redress against a company with no presence in the US would be difficult if you buy from an individual based overseas via eBay. If you buy from a US retailer, you could seek redress from the retailer.
4. Fourth, you could buy a "no name" stove, a stove with no known brand and no known affiliation. I case 4, you've got nothing to go on. What you get is a crapshoot in terms of safety, reliability, and functionality. As with cases "2" and "3" above, seeking legal redress against a company with no presence in the US would be difficult if you buy from an individual based overseas via eBay. If you buy from a US retailer, you could seek redress from the retailer.
Each of these is a different case. Personally, I wouldn't buy something in the fourth case, and certainly not via eBay from an individual seller based overseas. I would be hesitant to buy something in the third case, unless I knew of a specific product with a good reputation. I have and will continue to buy products in the second case (I own a Supalite and a FMS 116T). I wouldn't even give it a second thought for the first case.
In short, yes, I'm aware of the international nature of manufacturing these days, but there are different cases, some of which involve risks I'm not willing to take.
HJ
Adventures In Stoving
P.S. Note here that I am not a lawyer. I'm telling you my high level, very general understanding. Note that I'm speaking in very general terms and that I am not giving legal advice but am rather stating more high level "consumer tips."