Approximate UK Import costs from thegithubshop

Hi
Sorry to bother you, but I really can’t find any answers anywhere I look! I would really like to buy some stuff from thegithubshop.com and I live in the UK. I’m going to spend $45 on items and $20 on shipping. Have you any idea how much extra it would cost in import duty/taxes? I’m not looking for an exact figure and I will not blame anyone if it’s not correct! But I was thinking that it shouldn’t be any more than say an extra 20% or so. Does anyone have any feedback from UK customers as to how much extra they have to pay?
Thanks so much for any information you could give me
Andrew

Hi there! Welcome and thank you for your post! This gov.uk article may be of help to you.