You can order an IKEA Bekant without the table top, only the underframe sit/stand. A wooden table top looks much more aesthetic.

Wooden Table Top

IKEA Bekant Underframe for CHF 440.-

The controller board can be replaced with a version that remembers the position: Megadesk can be bought on Tindie for $25

Some people prefer UPLIFT Desks, over the cheap IKEA.