I charge $20 fingers, $20 thumb, $10 extra hole (only if it's being plugged by itself), and $40 for all. I charge $10 for pair of inserts and $10 for slug.
To answer the question below it's because most plug and redrills are to adjust the grip, not as much to alter the layout. If $70 were charged for a plug all, noone would get plug work done. You're just gearing the price towards the majority of your clients who aren't changing the layout.
Little known fact: In Russian "Hope" and "Change" translate to "Tax" and "Spend"
