IMO incorrect use of 're-seller'
I accept this just maybe an American thing, because it's not terminology we use in the UK in this context, but I've seen it a lot on this site, and most members on here are from the states, so that might explain it.
E.g. 'I just bought an XYZ from a re-seller'. So, you mean it's a used product? 'No, it is new'. Eh? So how is it from a re-seller? That implies the trader sells previously-sold goods, which are now being re-sold, hence they are a 're-seller'.
Surely the word you need is 'retailer', which no, is not the same.
Ah, yes, that irks me, also, and I agree with you, and I also find it confusing.
Across The Pond, our understanding of the term "reseller" is what @MajorFubar has written: A reseller is someone selling a used product; on the other hand, a shop, or store that sells the product - irrespective of whether they are a third party seller or not, - are the actual seller, the retailer, the vendor, and the law (such as the Sale of Goods Act) and consumer protection legislation takes this view and regards them - for legal purposes - as such.To me, a reseller just means a company who is not the manufacturer. You can buy Apple products at an Apple Store, or you can buy them at Amazon, Best Buy, John Lewis, etc. The non-Apple stores are resellers, or third party sellers. They had to buy the product from Apple (albeit at a discount) and they are re-selling it to you.