ftr, one victor got sold for ~400b this May. Apparently it was bought for ~300b before (WTS VICTOR SOLD - #49 by Pernicious_Cheese).
Of course people try to sell them for much more and it is often appraised around 450-500b. Some ask even more e.g. recently there was one on public contracts for 650b, which (unsuprisingly) did not sell.
It all depends fast you want to sell it:
- fast ==> ~370-420b
- eventually, after a few months ==> 500-550b
- never ==> 650b