It seems every PO has diff info about rules for mailing a pkg.I happened to be in 3 of them in last 10 days & all told me diff about weight etc of a pre paid envelope.One said anything you can get in it & close the envelope will be fine. Another said the envelope has to be perfectly flat.
Don't remember about other one.One clerk said he weighs them & charges extra if too heavy?
I'd like to see a retailer adv all over the country about a certain item, then let clerks charge whatever they like.Makes no sense at all. :( :(JMO