I probably should avoid going into garden centres at this time of year. I always buy up 'sale' orchids. This is my latest - it was horribly dehydrated when I bought it, but the pseudobulbs have plumped up nicely now. I love it - it's so dark - the camera has picked up a lot more red than actually shows on the flowers.
Not sure of the ID - could be a type of Margarette Holm?