If a key costs $2, it’s likely a "grey market" key that might be deactivated later.
Since Microsoft no longer sells Windows 7 directly, you’ll need to look at third-party retailers. buy windows 7 ultimate 32 bit product key
Sites like eBay often have listings, but be wary. Look for sellers with high ratings and a "Money Back Guarantee." If a key costs $2, it’s likely a