$30.00 is not necessarily excessive. It depends on the size and weight of the package as well the amount of insurance required. I ship via USPS Priority Mail with tracking, insurance and signature confirmation. All of my shipping labels are printed thru PayPal. I've often had to charge in the $30.00 range to ship via this method from one coast to the other.
exactly what i was going to say.
i sometimes overestimate and will refund the difference though.
i have asked people for lower shipping, yes.