PHP: Checkout for 1 product, Ebanx API w/Wishlist

Hi, I need a simple checkout coded. It's just one product, so I don't need a shopping cart - a buy button would be enough. Since I'm not experienced with PHP, I need someone with API experience to get all the systems to talk to each other. PAYMENT PROCESSOR: =================== The payment processor is ebanx.com. Ebanx has a demo store at [login to view URL] - It explains the whole payment process. I also have its source code and images, as well as the API Manual which describes the integration process in detail: [login to view URL] WEBSITE AND MEMBERSHIP SOLUTION: ================================ I'm on wordpress and use the optimizepress theme. I'd like to use wishlist as my membership portal, it's already installed. ECOMMERCE PLATFORM: ===================== Ebanx recommends [login to view URL] as an ecommerce platform since they have a plugin for it. Ebanx's extension was made in order to facilitate the implementation, which they told me is basically copy and paste files. That said, wishlist apparently likes to talk to the following: [login to view URL] - I'm not sure what the ideal combination would be. I'm guessing that once the thank-you page is reached, a call could be generated via the wishlist API but I'm not entirely sure about the best way to set that up: [login to view URL] QUESTIONS: ========== (1) What do you think would be the ideal way to do all the integration for a seemless checkout process from a buy button on my salesletter to ebanx to the membership site? (2) How long do you think it would take you to get it all integrated - can you give me an estimate of time (both in billable hours AND total days until the project is complete?)