This may be obvious to those with more technical know-how than I, I was hoping that the following two things would be possible with e-junkie:
1) You can add something to your cart by selecting a radio button (i.e. 'tick here to buy')
2) That the price of the item can be variable, depending on the existing total. Specifically, to be the difference between whatever the current total in and the next 'whole dollar' (i.e. if the cart is $23.65, then the 'item' will cost 35 cents)
Any info would be much appreciated!