Yeah, EVERY proxy service has a service fee. I recently won a Digimon washi tape for about 5$ (which in itself is a steep price for a tape but I really wanted it), but with all the shipping fees (because you have to pay TWO shipping fees! For the item to be shipped to Buyee and then to your country) and service fee it came up to be like... 20$. For a tape. I kind of immediatelly regretted it lol. But oh well.
But really I wouldn't get my hopes up for one of the rarest virtual pets that exist for such a low price. I know someone who cried from happiness for having to pay ONLY 100$ for one in a pretty poor condition, that's probably the cheapest I've seen it go for.
Well.. Except for someone who apparently got it at a second hand store for like 5$, but didn't like it so they... threw it in the trash. Because they didn't know it was rare. Yes, it happened. I don't understand throwing anything that works in the trash? So they kind of deserve it lol. But that's one less magical witches on the market...