Photography as an object of investment

[Konstantin]

I personally do not buy and that surprises me those who buy the picture, but being somehow Gallery Lumiere, watched a lively trade photographs at prices an average of about 10 000 rubles. (approximately $ 300). Circulation designated 10-15 pcs. and with the mandatory signature of the author. However, I do not understand how to make sure that the circulation of 10 pcs.