If you have multiple My Best Buy rewards accounts with separate certificates, you must call 1-888-BEST BUY (1-888-237-8289) to merge them; they cannot be merged online. Best Buy Gift Cards Terms and Conditions
Note: Some reports suggest in-store limits can be higher (up to 60) depending on manager approval and store SOPs. consolidate best buy gift cards
You cannot use a Best Buy gift card to buy another Best Buy or third-party gift card. If you have multiple My Best Buy rewards