Truebill plus Citi credit card can automatically give you price protection. Truebill protects you for 50 days with Citi cards on all supported retailers. Here are some of the recommended cards that will work with Truebill:
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? Truebill automates it and files your claim on your behalf automatically.