Is there anyway to offer the following?

I have 20 products in the category.... and the person orders 5+

ie. 1 x teddy bear, 1 x stuffed dog, 2 x stuffed cats, 1 x doll

They are all the same price of $19.75/each. When they order 5 or more kits, the price drops by $0.25 on each kit.

Thank you.

Jennie