Zootiestintz

So ive been posting ads on offerup and fb marketplace and ive been giving out quotes around $100-120  for all arounds. I recently started and i am a little scarred to charge that much but when i charged too low i wasnt getting any customers booked still. Any suggestions? Ive done a good 4 cars already but i wasnt too satisfied and lowered the price at the end

So ive been practicing tinting on my truck and i never had a problem where the battery dies but today i practiced on a window and about an hours later when i was going out the trucks battery was dead. Was it just my trucks oldness (its an 01 ranger) or should i only be keeping the key on while im moving the windows up and down? By the way today i did my first official tint job on a van, hopefully the guy had no battery problems.