If you ever visit in Helsinki, Finland, this is the most interesting orchid related place in town.
Runebergin Kukka
The owner Mr. Seppänen said that there was 1500 orchids. His own collection is also there, so you can't buy everything you see. The prices are very high though.
I had desided that at least one orchid is leaving with me and I found very cute Diaphananthe mazumbaiensis very reasonable price - 28e.