a) You franchise out "ecommerce" physical shops. This is a physical location where customer can come in surf ecommerce websites and place an order.
b) There is someone at this shop who will collect money on behalf of ecommerce websites. This could be cash credit debit whatever. Make these shops available at every nukad (every street). Hell give other shop owners these ecommerce terminals (just like sim card selling process or prepaid minutes fulfillment process) .
c) The packages are shipped to this shop or your home. Since these shops are conveniently located, near train stations, in airports, malls, picking up packages is not an hassle.
d) serve complimentary hot tea while people are shopping.
The actual order is fulfilled at an warehouse just like amazon.