So I’ve always gotten my tattoos from the same person but now he is working from home, I know he still has to pay for the supplies but should I still tip him the same as I normally would now that he technically gets to keep it all? He is charging me around 600 for what I’m getting

I know I should still tip I asked how much. Normally a chunk of that 600 he would not get to keep and I would tip 20%. Should I still tip him that much