Where can i buy windows product keys online?

[Generalynes]

what is the best place to buy product keys for windows 8.1 online? I searched a little and came up with this - windowskeystore dot com. It seemed cheaper. Should I trust them? Is it legit place to buy? Need suggestions.

 

[sinime]

I'd stick with direct from Microsoft or at least a trusted site like newegg, BestBuy, etc... Dirt cheap keys are usually dirty.