There are several sellers already offering what you're asking:

https://bitcointalk.org/index.php?topic=1313407.0

https://bitcointalk.org/index.php?topic=1322666.msg13510940#msg13510940

https://bitcointalk.org/index.php?topic=1291477.msg13265329#msg13265329

https://bitcointalk.org/index.php?topic=1305991.msg13374709#msg13374709