Trim + a Citi credit card can automatically give you price protection. Trim protects you for 50 days with Citi cards on all supported retailers.
Price protection refunds your money should an item you purchased drop in price after your purchase. Previously, you needed to be vigilant in watching for price drops - and who has time to do all that? Trim automates it and files your claim on your behalf automatically.
Here are some of the recommended cards that will work with Trim: