Never heard of it.
They are a UK based video game retail company founded in 2007. In terms of legitimacy, AFAIK they are mentioned as the authorized steam key reseller for Guild Wars 2
and Sniper Elite 3 (Rebellion Studios)
. They have had some problems with Fallout 4 preorder before as they didn't deliver the keys on time thus there was an outrage from the community, but in the end people got their keys. I bought keys from them as well and it went well. Hope this helps you Sachys.
Nonetheless, the price went up now.
Yeah, I found a list with authorised Steam resellers a few years ago (provided by a pretty big developer, can't remember which one anymore) and they were on there, along with the likes of Greenmangaming, Nuuvem, Gamesplanet etc. so I bought some stuff from them a couple of times. That all went perfectly ok.
Their store funstock.co.uk sells some pretty awesome retro stuff btw :)