Just to clear up a few questions asked.
Q: How much can you earn from a site like this?
A: The current website earns between $2000 - $4000 a month.
Q: How much bandwidth does this script use.
A: this all depends on how many users you have. We can offer you FREE hosting with unlimited bandwidth for 3 Months then the price per month will be between $25 - $50 depending on resource usage.
Q: is the design included?
A: yes a simple but very playable design is included but we would like this to be changed as much as possible from the current game design.
Q: How do you recieve the money?
A: the payment system we use is paypal. obviously you can implement others.
Hopefully this helps if you have any more questions please feel free to post / pm or direct email: firstname.lastname@example.org