I mean- it's just kind of simple. The graphics and sound are alright, along with the gameplay, but there's just not a lot going on. I wish it was more complex. There could be some kind of give and take situation where the player earns the difference between the suggested and real price (if they guess right of course) and there could be upgrades you could buy with the funds. I'm just thinking off of the top of my head here, but what you've already done here is a good start.