post-free
adv, adj
(a) (carried) free of charge by post or with postage already paid (邮件)免付邮资(的), 邮资已付(的)
,post-free delivery 免费投递
The book will be delivered post-free. 该书将免费寄送.
(b) (of a price) including the charge for postage (指价格)包括邮费在内(的)
a special offer at a post-free price of 5/at 5 post-free 5英镑免付邮资的特别优惠.