I CANT BELIEVE I HAVE TO PAY MORE!

I payed $3.99 for this game and I thought it was worth every penny, when a I found out there was snakes and stuff I got really happy until...I found out you want me to pay more money for a $4 app. I will not pay the extra dollar, you think its fair to spend $5 on an app like this? Please take off the "having to pay more, please" you would get a lot better reviews:)

JayJay141414 about Pet World Premium, v1.7