He also mentions he was an early miner.
If I were the seller, I'd probably do the same (just put it on international EBay instead). I mean, he gets some sure money out of it (255zl ~= 80 USD at the time of writing), and he can't recover it himself - either he has indeed tried every possibility, or is just a noob who doesn't know professional recovery services exist / doesn't have the money to pay them upfront.
I'd bet on the latter, but I don't have $80 + $400+ + international shipping to Seagate either.
price is around 250zł, but there is still 10 more day to finish his auction.
Anyway, I have few broken HDD around, I will do what he did
and sell them in a good price
Just need to have broken old HDD - then just post that there was 10000BTC, I mined in 2008.
and HDD that was a trash becomes a stab of gold