Grrrr! I know that it's out there, but I can't find it.

Anyone familiar with a mod / contribution that will allow you to have a product attribute that will just add a flat fee to cart?

For instance, I have a product for which I need to charge a one time set up fee of $25.00, in addition to the price per item, whether you buy 1 or 1000.

I just want an attribute that has the $25 in there, so when you enter your quantity and click add to cart, the price extends by qty, and then adds the $25 set up fee.

I've seen it, and I'm pretty sure that Linda's Shoppe Controller has it built in, but I don't want any of the other stuff, just this hack.