Excel calculation based on variable.

I have a fixed buying price that needs to be increased by a value according to the fixed amount. ie (<0.5 x2.5) (>0.5 <1 x2.25) (>1 <5 x2.0) (>5 <10 x 1.8) (>10 <20 x1.5) etc. Without using a highly complex formula, is there an easier way to resolve this?