If I set the price 1, I earn $30 every 5 min; If I set the price 30, I earn $44.5 ($30 for 1 tea and $14.5 for wholesaling 29 tea). Since I am not checking the game every 10 sec (even if I do, I would not be able to buy any upgrade anyway), there is no reason to do anything with the price setting once I set it high enough.
Two bugs report: 1. If you go left here (http://imgur.com/6TpyBxQ), you will end up here (http://imgur.com/Y7EYJ2K). 2. if you climb up and jump to right, you will lose control of the clone (http://imgur.com/BtNikn4).
If I build 100 low level building before I build the next building( ex: Lemonade Stand, then 100 Newspaper, then 100 car wash .......). My car will park on my money and my bank will build on my car, not a big deal though.
Check out the sequel Unfold 2 on my account. It's more challenging and contains pixel art levels :)