My local lowes stores usually carry Dendrobiums. At Christmas they also got in some oncidiums & after Christmas I picked one up on clearance for $3. It might even be a sharry baby or related.
I'm wondering if the oncidiums will show up again around Mother's Day. It's a good time to keep an eye out for orchids they don't usually carry. I try to go when they first arrive & click a pic with my phone of all the ones I like. Then if I find one on clearance later I can usually tell if it's one that I liked even if all the blooms are gone by comparing the pic to the plant.
But be careful! The above method is part of what has taken me from zero to 40 orchids in 8 months! Time to slow down on clearance orchids