post ‧ age /ˈpəʊstɪdʒ $ ˈpoʊs-/ BrE AmE noun [uncountable]
[ Word Family: noun : ↑ post , ↑ postage , ↑ postie , ↑ posting ; verb : ↑ post ; adjective : ↑ postal ]
the money charged for sending a letter, package etc by post:
How much is the postage for a postcard?
postage and packing British English postage and handling American English (=the charge for packing and sending something you have bought)
It’s yours for £13.99, including postage and packing.