Wondering if anyone's had any experience splitting a high dollar purchase (for example, TV) on 2 different cards. Since both cards offer an extended warranty and price protection, how do you know which one would be primary? Is it the one that gets the majority of the transaction value? What would happen if you split the charge 50/50? I ask because I'm looking at a particular TV that's offered for almost $800 less on one online store than everywhere else. However, after enough Googling, it sounds like this store is notorious for bait and switch and other unsavory tactics that lead to you not getting the TV you thought. But never having used price protection or extended warranties, I don't know how they'll work, and like the idea of doubling my chances of successfully redeeming an extended warranty claim or price protection. IE: If I split it between Discover and AmEx, and I submit the price protection claim on AmEx but they deny it because the website isn't a "legitimate" website in their eyes, I would still have the chance to submit it to Discover, or vice versa. I realize you could potentially double dip and submit it to both. I don't want to get into a discussion about the ethics there. I'm asking purely from the standpoint of having a backup to increase the likelihood of submitting one price match successfully. I am pretty sure the CC issuers state in the terms that it can't have been price matched any other way (by the store for instance), which I would assume includes any other CC issuer's price match as well.