Microsoft has a cashback on eBay auctions which are listed as "Buy It Now".
The
discount is usually about 5-30% off the regular BIN price.
The
restrictions might be changing, but what I saw last time is that you are eligible for discount up to $250 per purchase and you are limited for 3 purchases per your eBay account.
Your cashback will get to you using PayPal (no PayPal commissions) after 30 days after your purchase (to make sure you won't do a dispute.
You have to follow those instructions to get it:
1. Find the item you want (must be Buy It Now) and add it to your Watch list.
2. Go to live.com and search for something you wish to find on eBay until you get "Live Search Cashback".
For example, I searched for "xbox" and "wii" to get it.
I see it's currently running at 30% discount.
3. Click on that link to get to eBay. Once you are in, you will see a banner on the top saying "Buy It Now with PayPal and you may get cashback. See conditions".
I would suggest to read a restrictions to make sure you qualify (I think you have to be a US resident and some other stuff).
AFAIK, this offer will lasts for 60 minutes after you clicked on it.
4. Go to your Watch List and Buy It Now your item of your dreams. You have to use PayPal to make payment within 60 minutes or so.
5. After a while, you will get a message into "My Messages" in your eBay account saying that you got a cashback from Microsoft.
6. Click on that link to register a Microsoft live account (if you don't have one).
7. If everything goes right, you will get a cashback to your PayPal account after 30 days.
I personally tested the whole procedure and it worked!
I got my $170 and have a nice Dell 24" Monitor