OSOCOMMERCE or WORDPRESS DOWNLOAD SHOP

I need to setup a contents shop for the download of file. Except the generic details about the layout and how to show/sort the contents, my main concerning is another. 1 - the user needs to register (for free). 2 - The user needs to have 3 option for purchase: Option "A" After the free registration the user can subscribe to the website using a recurring payment and add money into his balance. Every time the payment will recur he will get more cash in his account to spend for the contents. We are talking about a monthly recurring payment Option "B" After the free registration the user can purchase the item directly using a shopping cart system, but in this case the item will cost 5 time more then if he has a recurring subscription Option "C" The user can buy "cash" to spend in his account with "one shot payment". Smt like "Load 50 usd in your balance", and after the payment is processed he will find 50 usd in his balance Basically when you show the item you need to show 2 price: Recurring subscriber price: 1 usd (for example) Buy is not without subscribe 5 usd After any purchase the user needs to find the items he selected in his account, each item is composed of several files. Payment Processor will be epoch and ccbill You can use osocommerce or wordpress engine, no custom scripts I need a quote for setup a test website, no payment processor, no special design. I want to see how it could work in "production" and how the user account and control panel could look Of course the same programmer will continue to work on it. No dam brocker, I want to talk with who will code it.