Npixelz: Each day you can earn wing currency so sometimes I use that to check out the stalls.
Plus, when you are in your cool down time waiting for your moves to regenerate and the market prices change ( every even hour), look at the sell and buy AGAIN before moving to another stall.
I look at the buy and sell tabs before I buy and if it looks good write it down. And it helps if someone messages a good deal.
Ashton, PM Diana because I swore one day I saw your rank up higher. Does it make a difference if you don't play daily?
HPWEVER : If you sell at a loss your score goes down which makes your rank go down. 