How do i find out shipping costs?

[Croton]

If i know the weight of the package and address of the buyer, how can i find out how much a shipping will cost me?

Can i find this info out w/FedEx, UPS, and USPS?
thx

 

[denali]

USPS
FedEx
UPS

 

[Croton]

cool
thanks

are there any for USPS and fedex?

which shipper do u guys using the most?