If you intend the commission to continue on at the same rate, ie 30 sales =
50% commission, 40 sales = 60% commission, and the net cost is in C1, (you
need a net cost to give you a Gross cost in B1) then your commission would
be:

=IF(A1<10,0,(FLOOR(A1,10)+20)%*C1*A1)

or without the IF:

=((FLOOR(A1,10)+20)*(A19))%*C1*A1

The Gross Price per Sale in B1 would be:

=MAX(((FLOOR(A1,10)+120)*(A19)),100)%*C1

--
HTH

Sandy

Replace@mailinator with @tiscali.co.uk

"Newbie99" wrote in message
...
ok, here's the scenario:

Column A = number of sales
Column B = gross per sale

depending on number of sales, the percentage of commission increases (i.e.
10 sales = 30% commission, 20 sales = 40% commission) I want to be able to
plug numbers in the columns and have my commission be totalled at the cell
I
have designated.

If someone could show me how to do it I would greatly appreciate it.

thanks