Some adjustable desks (with an electric motor) are much more affordable than others. Is something wrong with a cheap sit-to-stand desk?
Possibly. Verify how far down the table goes. Some models do not go down that far. Vivo makes a variety of desks, but some of their models do not go down very low when you are sitting compared to some other models. That may be a reason why you would not want to buy one. The table tops that are good for transport, and break down into different pieces, sometimes have seams; that is, the edge between the pieces when assembled will not make for a good writing surface. There are tradeoffs to different features. Transportation is a real concern. There is no getting around that.
You may want to view these sit-stand desks.