I thought the "coke" being sold was of the illegal variety that's available in the darknet. Hahaha.
But good job by the hacker. This opens up Bitcoin for new forms of micro-payments for the real world, maybe something like short-time rental type services like Lightning-enabled airport trolleys or Lightning-enabled parking meters.
OP, I believe this qualifies in the Lightning Network topic. Post it here,
https://bitcointalk.org/index.php?topic=4638321.0