Well
the domain expired in 2016 and has only recently been
registered again... so any past history is irrelevant as you have no idea if the same people own it now.
What's wrong with been wary when the site has absolutely no reputation? that doesn't mean its a scam, however it's common sense when buying online to find some reviews / feedback how lesser known sites operate. Look at nds-card who sponsor this site, I know nothing about them, however can find plenty of positive customer experiences from different individuals. As of yet this website hasn't sold anything, so for me personally that makes me sceptical.
Honestly I don't care, it's not even something i'm buying. The way your going on its like you have something to do with that site.
I was simply offering some advice to the OP. Either way the site will soon have some feedback and if its positive then great, we all have a fast way to buy in the UK.