My general point is, they are not rare. they are definitely mostly still out there. Just for example, I have not seen so many Mavic 851 RDs pop up at eBay for sale in the last couple of years. There where hardly any for auction at eBay two/three years ago (most likely because the sellers and buyers just did not really notice them yet.) and when they did pop up, I could get them for about $100 easy WITH a matching NOS FD. Same with Mavic handlebars. Heck the two NOS ones I bought a little more than two years ago cost me about 40 bucks each, I now see more Mavic handlebars for auction at eBay than I ever did, but for three times the price now. Before that So, sorry I cannot buy into your theories of supply and demand causing the dramatic price rise.
I don't think I'll ever convince you otherwise and more power to you if you want to sell at your prices and be able to do so with the deep pocket collectors from the far east, but that's the facts on my side and it's all pretty simple and obvious IMO.

Chombi