No, that sounds about right. At the normal grocery store in my area, for example, cauliflower, broccoli, cabbage are $1.99/pound right now, celery is $1.49/pound. Asparagus is much more expensive, I think around $4.99/pound.

I cheat by shopping at the local Korean grocery store instead, prices are much cheaper but you have to sort through the produce to make sure quality is up to par.