The dual 7601's are 500-600 each on ebay, I will say 550 each for 1100, and the motherboard is $500-700, so I will go 600 for $1700 total. Or make me an offer I can think about.
The 7401 is about $300 and the motherboard is $500, so $800 total. or offer.
The 7551 and motherboard, $1000 total. or offer.
No memory on any, as they will get used in the Milan setups I plan to get.