Wiki, we have all 2 motor vacs that are at least 24 years old. A decade ago we changed our prices from $1/4 minutes to $1/3 minutes and I'm sure it helped but cutting time is really hard to measure the impact it has. This year we rebuilt our vacs, like we do every year, but replaced everything whether it needed it or not..all gaskets, bags, hoses, claws, cuffs, and motors. We also removed all the decals from the actual vac bodies and just left them as naked stainless. Then we raised our prices to $2/4 minutes. Needless to say, we have had record vacuum revenue this year. Yes, had people ask about the price increase. Some were not happy with it, I even noticed some drive in, stop, then leave without vacuuming. I didn't drive around and check out others pricing because I already knew they are undercharging at $.75/5 min at gas some gas stations and $1/4 min at some other washes. I also already knew they don't maintain them like we do. They're vacuums might be 20 years newer than ours, but if you don't clean them out and fix holes in hoses, etc. they don't suck. Vacuums require a lot of time, why not charge for them? One of the best things decisons I made this year!