There's an orchid show coming up for midwesterners (and anybody else) in St Louis at MOBOT.(February and March). They usually have gazillions for sale in their on site garden store while the show is held,
http://garden.org/apps/events/...
For sale back in Feb. 2013
Also, all year in the tropical dome 'Climatron' there's a lot of orchids for viewing -
A few examples -
