I have products which have the need of a deposit , for example; Beer (The user buys beer, but have to return the canister) so i want to firstly let them pay lets say 20 Euros for the deposit and when they return it the get the 20 back.
Product 1 BEER (50 euros) MUST HAVE 1 Product canister (20 euros) ....
and to get more complicated ;
Product 1 GLAS (1 euro) MUST HAVE X Product Glasrek (25 euro's)..1 glasrek PER 24 items GLAS.....
The idea of Buy X and get Y is not making this ok for me ,
How should i take care of this problem, there must be someone who had this problem before.