My Driveway is Clean, but the Grammar is Not!

A fellow with a pressure washer did a great job cleaning my driveway this week. However, his flyer left a little to be desired as far as good grammar is concerned. He offered a Holiday Special this way:

All driveway's, sidewalk's, house's, anything - 50% off.

Whoops! I think I will take up a collection to post billboards that say: PLEASE, PEOPLE, YOU DO NOT NEED AN APOSTROPHE TO MAKE A WORD PLURAL. His special should have read this way:

All driveways, sidewalks, houses, anything - 50% off.

Underneath the photos of "before and after" steps, driveways, and decks, he put this sentence:

Hurry and schedule your appointment while offer last.


Whoops again! The word "offer" is SINGULAR, so the verb "last" should have an "s" on it. The sentence should read this way:

Hurry and schedule your appointment while this offer lasts.

What do you think? Should I ignore the goofs with the attitude--who cares? He's not an English major. Or, should I note the problems so that his business flyers give a better impression?