Also, make sure the website you're buying from is legit. If priced too low, or too high, that should tick off your alarm.
If it's too cheap that's too good to be true unless it is refurbished. Always check the details.
i know that the site is legit, i know people who have bought stuff from there and i have bought an Motherboard and a CPU to my desktop from there
if you want to check the website ( its in finnish ) here you go www.systemastore.fi/