if I wanted to buy a mostly-okay i5 system from a rent-to-own company for two or three times what I could build an equivalent system for.
It looks like the store is set up for people who want to buy outright rather than RTO. Prices seem quite good too. They don't try to screw you on the options either. Upgrade from 2GB to 4GB is £10 vs £80 if you're you want to do the same with your Mac Mini when you buy from Apple.