[Parrot]

Hello Alex,

I don't know if there is a way to do that without major cart redesign.

However, may I make a suggestion that may help in the interim?

Perhaps make them as option choices and separate items.

Lets say Options as:
12pgs (1000units) <--being the standard price
12pgs (5000units)=+2110 "{(3395-1285)}"
12pgs (20000units)=+6935 "{(8220-1285)}"
20pgs (1000units)=+1460 "{(2745-1285)}"
20pgs (5000units)=+3180 "{(4465-1285)}"
and so on....

I tested it. It does work. If the prices are the same for a group of magazines, you could set that up in the global product options. You could use each page quantity as a separate option or keep them all as one option. Then I would REQUIRE your buyers to select an option. This will then require them to buy in those quantities only. I am sure there is a way to require an option to be selected before sending to cart.

This may not be the optimal way of doing this, but it may get the job done until you find a better alternative.

HTH