Judging quotes by the headline number alone
A AED 30–40 wipe and a AED 90–110 steam job are different products, not the same product at different prices. Normalise method, scope, car size and access before comparing.
Letting anyone dry-wipe a genuinely dirty car
Waterless washing is safe on light dust and dangerous on bonded grime. After rain, a sandstorm, or two neglected weeks in open parking, a dry wipe grinds grit into the clear coat. The AED 20–50 saved over a steam wash converts into polishing bills of AED 150–400 later.
Paying one-off prices for a recurring need
If the car gets washed every week anyway, buying that wash ad hoc at AED 40–70 instead of a subscription at an effective AED 25–65 is a standing overpayment. Route-based weekly plans are cheaper to deliver, and the saving is there for anyone who asks.