Secondhand PSP

Hi guys, I've looked for a secondhand PSP on eBay Advertises, and there's this guy from my city who's selling a PSP Phat 1004, cracked and bundled with MS PRO DUO 1GB (I guess it's the SD).
The seller asked me how much I offer, but I don't know how low can I go. I want to spend 50 to 70 euros, is it a fair price? It's the first model..tl;dr how should I offer for a PSP Phat 1004?

make sure there's nothing wrong with it. I bought mine second hand, and it has a crack in the outer shell, an unstable battery case, and a thumb-pad that moves on it's own (I got everything fixed except for the thumb-pad -.-)

That's not a problem, the seller lives in my town and I'd go take the PSP at his house.. So I can check if it works :P

Replying to #3

I figure that should be a fair price. You're only getting a 1gb card with it, so you're gonna have to spend some cash to upgrade that to make hacking it worth your time.

Give him your price, and say is that too low, ramp it up bit by bit...Now from my currency conversion, for a cracked 1000 model psp, 50 euro's is fair ($70AUD), but 70 is also fare...Just ask, see how you go, keep going until you hit the sweet spot.

Ok guys I offered him 35€.. Let's see how high he can get :D Wish me luck!