Hmmmm

Even tho this is ur first game i must say its fairly lame am not trying to sound mean but you should add some form of diffuculity, more things to actually do, Better graphics if possible? And generally jsut do more with this although am not sure how you could improve on this

Not really a game

Interactive, yes.
Winnable, obviously.
But difficult? Not at all.
There's no real challange. Maybe a competitors Score to put yourself against(X>Y=+1 Score/## thing), or actual horrible conditions where you could completely lose out on buying too many of something. A Day Subtractor Could also be added, as a countdown to a certain net gain. Also maybe adding Popcorn as a buyable item, as it seems to be something the "Customers" want.

Hmm...

Not bad for your first flash, at least your programming seems solid. As a game, however, its really flawed. There's no real feedback on why items sell the way they do within any given conditions, and I constantly made a profit by simply buying one of everything each day. Also, you need a time limit to add any challenge at all.

Wow...

You have got to be kidding me.....