Lemon Stall Sim W.I.P

Working in progress.
A simulation of a stall making sales
factored into sales are:
product price
product cost
product quality
weather conditions
popularity

No graphics have been add to the product yet.

Controls:
First slider - product price
Second slider - product cost/quality
F - change information/stats
D arrow - continue to next day.

Win by surving to year 2020
Lose if money is less than -300

Scoring system coming soon plus plenty of other features.
please comment on and ideas.