It never hurts to ask
Importing from the US does mean time delays of international postage and the unknown factors of how much £ will it really cost you when the bank converts from $ and whether you will get hit for import VAT and also handling fees to send you the bill
Check with BZ as with anything the UK retailers can often get you things that aren’t listed on their websites, and you get to find out the true £ price they will charge.
It also never hurts to keep paintball £s in the economy and keep turnover going for our retailers
That’s not to say never self import, but to save that for when things are special
I believe the import threshold is £15 and they include postage in the value these days, so a jersey, name customization, postage and a legitimate valuation as opposed to a dodgy Hong Kong gift/sample/$0.01 valuation should mean you get an extra charge (20% plus £8 or more handling fee) , but things will often just arrive which can vary by carrier