Well, I did not like it...
The goal is simple and original but, the prices are WAY too high... And, you would have got a 6 but I HATE the publicity that appear EACH time that you click a button on the menu... Sorry, but you've got a 2/10 and a 1/5 from me...
If you do a game, next time, try to take somes musics that actually fits the game. Also, there's not enough of features. Update this game, add more features, lower the prices a little and remove all that publicity! Also, I'm a WASD player so... If you could, you could add WASD controls...
So, hum, good luck...