Sorry for confusion. It was my fault as I literally did not follow forum rules. The thread must be placed in "white market" as it is commercial purpose. So I'll replace it there today later.
However I do not understand how then other sellers are kept not in "White market".
If I will make a thread in "Microphones" but will not show the price and stock, will it be OK?
Some time ago I had a couple of extra microphone PCBs and components I offered in the 'black market'.
My intention was to help some DIY microphone builders and I did not make any profit on the kits (I just had a few of them), but my post was removed because I was 'a commercial seller'.
It is of course difficult to draw the line here, but I don't think that if somebody is offering 10 microphone bodies (which is a lot of work and trouble I suppose!), can be described as: 'a commercial seller'.