Hi Flavio
Use your guts feeling If the price is very low and still in doubts however you like it you can buy it
Not only in Brazil the Auction Houses sell questionable items Either they know or not they try to sell anything on offer That how they make $$$$ I can tell you that I have seen even the most reputable Auction Houses sell questionable item They get away by stating that the items are OK according to their knowledge The Rule Buyer Be Aware is in place Good to ask the Forum. At least you have better idea for what you will be bidding for
Cheers