Yeah, I had an acquantaince who worked a similar job to the one in the letter - working at home for an Amazon repacker, getting deliveries from Chinese resellers, going through them and repacking to sell on Amazon - and she was constantly talking about how much free stuff she got. (I think they did mostly cosmetics/personal care stuff, it was often that if one bottle in the package leaked they had to write off the whole box, even if they just needed wiped down.) I found her constant bragging mildly annoying and find the whole business model mildly scammy but I don't think either she or the person she was working for thought she was doing anything dishonest.