This $201 standing desk has a disproportionately decent-quality Kaidi dual motor frame whose height range is right for you. It comes with a crappy small spliced desk top which you don't need, but the price is great for the frame alone! Pair that frame with a durable high pressure laminate top for a total price of $331 + tax.

If you don't mind a spliced top, you can spend the least with this $225 55" "L-shaped" version of the same desk.