I found knock-off daylight lamps at Menard's (a construction warehouse) for $15.00 at one point, but do not know if they are still available. I would suggest checking. Sometimes you can find bargains in the most unlikely places.
We snatched up a few of them, both floor and desk models, because my husband ties fishing flies, I like the lamps for sewing, and DD #1 is an artist. Plus, they seem to help with seasonal depression.