Development of PTC script

We are Indian based company looking for experienced developers to make unique PTC scripts like PTCPAY, ZEUS, Buxhost (we want to be a PTC script seller). We need a custom coded PTC script with full rights to our company with licence key feature which we can sell to others. This is a huge project starting in few phases. We are looking for quotation on phase basis. Our approximate budget is up to 750-1500 USD and will be paid according to the progress of the project via PayPal. Interested service providers are requested to contact us as soon as possible with their profile via PM We'll need there support for life And they'll also be earning 1% on each script sale we do for life.