I think you maybe misreading the sticky. You only need 200 to sell. Any number to buy as long as the person you are buying from feels comfortable about selling to you.
I certainly wouldnt buy the one you showed. The one on the sales forum here is much nicer. However IMO hang out for a racing dial. Here is mine. The case is a bit rough but still has the radial brushing visible
View attachment 753039
Click to expand...