I think it is scrap actually. If I can download the service manual, I would probably consider it for $200 just for fun. I recently sold my top condition 15 year old AVR-3805 that offers at least half of the power output of the 7250 if used as a power amp, and is in top condition with absolutely nothing wrong. The 3805 is among the very few amp (let alone AVR) that passed the brutal one ohm test, by AVTech. I got $100 for it and thought the price was fair, may be worth $150 if I tried.. If you cannot find the service manual for the 7250, it is a significant risk that you would lose $650 in case of a major failure.
If you are really tempted for some reason, at least call a reputable repair shop and ask if they have the service manual and try ask for an estimate just for a thorough check out and re-cap all the large electrolytic ones. That should give you some idea. My educated guess is, it would cost you over $150 just to recap the biggies.