How much is reasonable to charge for grass cutting and car washing?

guitarsimon questioned:

How much is evenhanded to payment for Lawn cutting and car washing?
I’m looking to bring to somebody's attention some assets at the weekend or on evenings with work and I’m in the midpoint of crafty a flyer to post owing to public’s letterboxes. So here’s to some excellent market investigate…!

How much would you be keen to pay for your Lawn cutting? And How much would you be keen to pay for your car washed?

Any additional dreams you have will be very helpful.
Many thankfulness for your help.