I don't think this is the place to barter....I bought a 578a for $129.99 ($100 US approx) and returned it last month as it was nowhere near my existing player, a Panasonic F85, in picture quality and DVD audio ...I liked the fact it was a single player, and redbook CD's maybe sounded a tad better. I read so much about this player that it was the best deal out there..it is still lower end entry level stuff and was disappointed.
Not to mention it is probably one of the models with the firmware problem that came out early on.
When you factor into it the US-Canada exchange, shipping, the fact it is used, I don't know if I would even offer you the $75 I did before..that was after a few wobbily pops yesterday...

.and that's Canadian dollars...approx $60 US. It's used. Worth half what you paid for. Period.
Good luck with it.