[ic] adding a per SKU charge

[Dave Turk]

I have a customer that sells mugs, shirts and hats and some of the items
have a screen charge of $45 regardless of how many they order of the
same SKU #. How can I add this to the options table so that it will
add $45 to the total after the quantity has been multipled by the base price
plus options. Any hints would be great, even just a starting point.
Thanks for all the help everyone has already given me.
Dave Turk