I had all three of those lenses back in the day and they are very good. Moved on to the RB 67 Pro S, though. I would hang on to them for a little longer. KEH probably won't give you a whole lot for them anyway. GLWS.
Surprising KEH is offering more than what I'm asking for the 55mm and Paypal, I don't think, will charge me to receive money. Plus free shipping back and forth if I change my mind.
Edit: I checked again, Ok, it's not more, but if I pay for shipping and paypal, then It's more.
I want all but the 80mm, but I don't get paid until the 15th! I will definitely take both if you can wait until then? I understand if you can't but I REALLY want at least the 80mm.
Same kit I have with my 645 Pro. They're all excellent. I got mine from KEH (except the 80 which came with the camera kit I got from someone either here or on LFPF, don't recall which - here I think) and of course paid more.
Good luck with the sale. Someone will get another nice lens.