If I had a pair of mirror-image DQ10s, with freshly rebuilt woofers, and with crossovers and other drivers verified working correctly, in pristine condition, I wouldn't take less than $500 for the pair. And I'd just be willing to wait until that right person came along, that would appreciate them, and be willing to pay what they're actually worth. They are worth that much, if they are actually in near-line-new condition...
Regards,
Gordon.