Fun but too easy and glitchy

This game was a ton of fun. I played it addictively until the end.
However, this game is really easy. I had no trouble getting an expert rank on every level. And the game doesnt progressively get harder, it just stays easy.

Last notes: This game is very audio-cue based.
Also there are teens that behave like kids. They should be renamed to kids.

Glitches:
Celebrities sometimes dont appear. You hear the music and shoppers stop shopping, but the celebrity doesnt come into the store.

Also when the scenario is that customers can buy whole shelves of products, a customer will keep taking a food from a shelf if you keep refilling the shelf. If you have the store room upgrade, then it is easy to refill your cart quickly and go back to making the customer continuously add to their cart. This customer can net at least $500.

Hlwhm about Supermarket Mania® (Full), v1.10