ecommerce site based on interspire shopping cart. as discussed with asarfraz site need . this is a subscription based ecommerce site with option to buy monthly subscription or yearly subscription at discounted price.
the client is giving the option for 10 days free trial. after witch and if client didn't cancel . he will be charged according to the plan he chooses.
the checkout flow should be something like this client comes on our site. on main page he will be presented with brief description of our sevices. with option to explore more like faq products features. clients review . on each of theses pages the client can choose the plan he wanted and proceed to checkout.
the checkout step should be as follow. new client should create an account on our site. same account credential will be created on site b using an api. then the client will be directed to paypal . he will enter payment information. once payment method is validated. he will be redirected to our site to download the software install it...etc