Recommendations for Gravity type blanket please

[Willyoubuymeahouseofgold]

My gorgeous daughter suffers from Anxiety and is having a very bad time just now. Someone mentioned Gravity blankets on here but I see they are £150ish! Can anyone recommend a cheaper alternative as there are some as cheap as £30 on ebay and other prices in between .
Do you get what you pay for in this situation ? I'll gladly buy it for her but it's a lot of money, just want to be sure I need to spend that much .

I bought one for DS from eBay. It was from this seller

rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F292407703840

It's really well made, has survived being carted around the house and on holiday, and it works to help calm him down when he's twitchy.

Thank you Doom .. any tips on how to select a weight from the range?

Recommended 10% of body weight.

10% of body weight which is surprisingly heavy when you actually hold it in your hands, DS blanket weighs 9lbs! The lady asked his weight and calculated it for me.

Great , thank you very much .