We want to do a relative simple thing. We sell Events and we want to offer following combinations:
1.- CHOOSE AN EVENT:
o Event A = 100 EUR
o Event B = 120 EUR
There should be a discount if customer choose Event A + Event B (In this case 200 EUR, 20€ discount)
2.- PAYING TOTAL AMOUNT NOW or MAKE A RESERVATION?
(a) I Pay Total Now. Total = (Event A or Event B or Event A+B - Discount)
(b) I Pay 50% Reservation Now. Total = (Event A or Event B or Event A+B) / 2
I don't know:
3.- how to parse choices from Optión 1 to (a) or (b)
4.- how to parse (a) or (b) to be the total Price.