add a option but with one price

Hello All,

I have a problem, i’m adding a new product Lighters. But we sell them printed.

If a customer pick lets say 500 lighters it does 500x the price. But when i add a option say printed with one color. One color cost 39,- two colors cost 49. When i pick one color then it does 500x 39,- also :smiley:

But it needs to just add the 39,- to the total of 500 x the price.

Hope someone can help me with this.