Quite a bit.. Cost of the shave/fill, the paint job to blend it to match, the solenoids to pop open the doors, and the worries that one day your battery will die and you'll be screwed
I'm thinking about leaving the trunk keyhole for that reason, so I've got some way to get in the car if the battery dies.. You could also get an alarm that rolls down the windows, but it'll be a pain to keep opening the door from the inside, unless you wanna do it Dukes of Hazzard style.
FYI:
Enjoy!
