Lookup up values

I have done this before but can’t remember how. I think I used vlookup but any help will be appreciated. What I want to do is figure a commission base on the number of units sold on new and used units. The minimum commission should be $125.00. C30 equals the total number of units. Column H2 should figure the commission for new base on the gross in column E2 of $490.00 x 32.5% based on the 14 units.