That's typical for most products like that but it doesn't solve the problem. The issue is only partly "will I like it" or "will it fit me", for which a free return policy can help (but not fully solve), but a lot of the issue is "why would I want this". If you walk past one in a shop and can give it a go you're much more likely to overcome that than spending £300 on one and having to go through the return process.

Aside, I hear a lot more about free returns from people in the US. In the UK they are seemingly near-universal, but there is significantly less willingness to return outside of specific categories such as clothing. I have a little experience working in a retailer (as a software engineer), and US return rates were far higher than UK/EU return rates, and this was apparently considered typical.