Lemonscent is awesome, but don't let your self be pressured! And ask for a punch card at the front desk, get 9 washes and get the tenth free! Or online they have coupons for $5 off and stuff :)
Obviously they try to sell you. It's a car wash. Upgrades and additions is how they make all their money. Don't see how that's nearly every complaint. That's the car washes work.