Orchid pros- what's the best way to sell my expensive orchids?

My dad passed away a while. He left a greenhouse full of expensive, rare orchids. I've posted on Craigslist and a lot of people have come. But one guy just bought almost 5 plants for $55! My dad use to buy plants worth $3000! Each time his friends would come, he'd trade plants for at least $500. I know I'm probably getting ripped off, but what's the best way to sell these plants without having much knowledge? I've heard Ebay was better... please help!

Orchid pros- what's the best way to sell my expensive orchids?
Wow.. you need to talk with a local expert who can come out and view the species / quality of the plants. Or take jpeg fotos and submit them to experts online for evaluation. But pls don't continue with craigslist etc., until you have thoroughly evaluated the plants. I couldn't help more because I can't see them .