what is a good deal for a 125 gallon

[ercnan]

I'll list it with the stand. I also have two fluval 405s that need new hose ends and impeller covers. Should I get the fluval parts first then include them in the deal.

Would 400 for the two filters, tank, and stand be asking too much?

Usable filters would be a plus for me. If I had to gets parts for 'em, I would not be too eager to offer much for 'em.
2 good filters, a tank in good shape, and a stand for 400 seems reasonable to me.