[TheForge] opinions please, 2 Qs

[Peter Fels & Phoebe Palmer]

Just back from the CBA conf..It was a good one. Must have been 50 anvils set up in the education-open forge area!
All my small shiny bronze forgings ( knobs and belt buckles) sold to other smiths! Yea! 
Those guys are supposed to know better.
One friend just finished a lucrative job, had some bucks, and came with his wife to the conf. He spotted a very nice 350# anvil he really wanted at the tailgate sales for $1500 and while the wife was off somewhere, quietly negotiated the price, paid, and to avoid familial friction , erased the final 0 from the price chalked on the face. Everyone seemed happy as we helped him load it in his truck.

Questions please.

1 A friend has a worn, early, 100# Big Blue hammer he wants to sell. It has a recently rebuilt air cyl but loose gibs.
 I've heard that with the new valving package it would be capable of single , controlled strength, blows, which i want.
Opinions? Is it worth fooling with?

2 I have an unused 165 early Anyang that needs a big, expensive,  foundation on this steep clay ridge we live on, and my screwed up back isn't going to allow to handle big enough steel any more  to justify that big a hammer.
Educated guesses as to what it's worth now?