You looked at the sales statistics on this site?
For example on Goguadze
http://www.artinvestment.ru/auctions/41320
Because it is clear about how much it might cost, but this does not mean that it is possible to sell. Or at least
quickly sell.
Ask
exact assessment of a little-known contemporary artist - useless (my opinion). All will address a particular situation, he saw a man, like, haggle, and ...
At Petrova - smooth on this site is no sales statistics, and therefore opredilitsya costs is very difficult. Even if someone answers it will be very tentative.
Especially on the photo.
No written response came from LSR - agree with the answer.