Ok so I have a really puzzling problem which I can't seem to get past, I think my logic is flawed.
We're providing combination deals such as:
3 items = 2% Off 4 items = 4% Off 5 items = 6% Off 6 items = 8% Off
Now I've got this working fine up to now but I have one main problem which is stopping me from continuing with the project. The problem is for example:
A customer adds 4 separate items to the basket and they get the 4% discount. But on the last minute they decide change the quantity of one of the 4 items to 2. Now when they change the quantity of one of the items to 2, the discount reverts back to 2% but for the cost of the 5 items.
When adding 3 items they get 2% discount and if they change the quantity it keeps the discount the exact same, so the first rule works fine, but anything above the 3 items combo rule is messes up.
Any help at all would be amazing help for me.
Thanks a lot guys.
Note: Try it to see exactly my situation: http://bathroomcouture.co.uk/testserver