I've noticed, but I thought I'd check here first, especially considering the only Femoneg on eBay at the moment is going for the ridiculous price of $300.
they were very expensive when new but that is quite a lot of money. I can never work out how come people need them. I guess they must buy enlargers without them unless they are using them for making printing masks or duplicates.
I have a Femoneg and various masks. I was just about to put them up on that aution place The femoneg has moderate wear, the screws that hold the top and bottom together are missing, and the one slider for the left masking blade is missing. The femomasks have moderate wear but are perfectly useable. The only mask I don't think I have is the 6x6, but I'll check my darkroom tonight for an extra one.... PM me and we'll discuss some more...