Bought windows 7 sticker without box, has a no return policy.

As the title mentions, i bought 3 windows 7 home premium stickers from a shop near my house. I got them (3) for $184 (US), while 3 stickers in a box cost $272 (US), and now i have a feeling they are all pirated copies that don't work properly. I haven't tried them yet as all my computers and laptops are already running windows 7 home prem / professional. I never bought from this shop before. Is there a way to get real copies or am i screwed and i spent a lot of money on nothing.

Thanks for your help Brink.

All i got from the person i bought it from was a CoA sticker with a product key on it. Please tell me if thats enough. Thx
I sent a report to Microsoft.

Thanks again.

Michael

Thanks for all the support guys

Quote bobafetthotmail: "I think you got the OEM stickers, that are cheaper but can be installed only on a single PC and will be linked to it forever (not transferable to another after you activated it, but can reinstall and reactivate the same PC all times you want).
The ones that cost more are the Retail version, that isn't linked to a single PC forever. But without seeing them there is no way to tell what is what.
Can you post a pic of them (with the product key covered/deleted from the image of course)?"

I think it is the OEM version, thx for the info :)
I have included a screenie below

Thanks for all the help Brink, and everyone else.

I don't mind having it tied to a specific motherboard.
I will close this thread in 10 mins.

THANKS AGAIN :)

You are all very

Michael

BTW, is there a way to check if it is already used?????