How much was the desk? I have one that is in a fixed position and have been standing or using a treadmill desk for many years. Make sure you get a mat to stand on ASAP or you will hurt your back.
Also instead of sitting down on a chair for part of the day you can get one of these and never have to change the height of your desk.
Uncaged Ergonomics Wobble Stool Ergonomic Office and Bar Chair | Wayfair
Varier Move Stool with Cushion | Wayfair