I am having an issue with the shipping not showing up on check out for the buyer

Ok, the shipping isn't showing up in the paypal box on check out

Right now store owner enters Extra shipping: whatever amount they want shipping to be
I found out they can't do that, that they shipping need to be set up under store settings

I did that (very small amount .50) and it still doesn't work with the extra shipping too.

Then I added the just the regular amount under store settings and took out the extra shipping part

Still not working

Suggestions?

I was going to send out an e-mail to all the users and tell them they needed to add their shipping into their price and say price includes shipping.

Need to know where this needs to be changed, please.

I've already had to eat the shipping cost from sale