whatever the dealer is doing to charge you is crazy too much.
you would literally better off to get the software (alfaobd), the SGW bypass, the obd reader, and the charging parts yourself than to pay them the once.
at least you would get to keep the software to enable features for next time and pull diagnostic info on your own.
Looks like the charging module is $300-$400 plus installation and programming. Not really worth it. Will either copy OP's idea or see if I can find a pad that fits perfectly into the console and use that.