For win a Pricebender:
1.You need time;
2.You need enough TCredits to spend;
3.You have to think how much money you want to spend for that stuff;
4.You have to wait till the last 5 sec and bid if you are not the last bidder;
5.You have to stop to do all that only after you win.
It's not bad to look if someone use Auto Bid and wait by the time he stop to use it; that only in case you really want that product.
After that, you need luck :)
