Take 30 minutes after hours and figure out how much money walk in traffic brings you a month.
Also how much time tire kickers spend and quantify that into unearned dollars.
Every minute spent talking about a 3" X 2" singular sticker is time not spent making real money.
You'll probably find that closing your doors to the public is a better decision.
We've have not had walk in traffic for 15 years. Everything is over the phone or internet, we also shoot for a $100 minimum order.
If you want walk in traffic, put a sign on the front door that says "By appointment only" with your phone number.
Your production in the back shop will go up like a rocket, so will your profit per hour.