I bought a couple of tablet holders at around the £20 to £30 mark. I wasn’t impressed with the quality, specifically the wobble when using my Lenovo M10 10.3" tablet, despite being advertised to handle this size.
I was tempted by the MavMount as they seem to tick all the boxes regarding quality. But seem to cost around £80 with delivery from the States, and I am not sure given the current climate, shipping would be affected. So I decided to make my own from sourcing parts from Amazon.
The total price came to £59.96 delivered. It takes tablets between 120-233mm and does not wobble at all. Posting in case it helps anyone else