You have to buy some in bulk so just ignore those ones . Find one where it doesn’t say you have to buy 10 at a time like this one
Now click on the item and check to see if the seller has good feedback
Like this guy does have great feedback.
Now please note : YOU ARE NOT BUYING A PRE-PAID CARD BUT A ACCOUNT THAT HAS THE MS POINTS PRE-LOADED ONTO IT.
In the US the account will work to buy any content you want.
In the other countrys it will work on everything other than games on demand
Anyway make an account and buy the MS points .
Next you will get a message saying the item has been shipped look here ( this account has had the points spent lol)
Now recover the account and spend your points. You can also buy accounts with 10,000 MS points on a Pre-Loaded account. I have used the accounts to buy many things like MW2 Maps and fifa 10 stuff. All my accounts have worked Great !!!
Enjoy your points
-Joe