Agreed, both have some mis-understand.

lehrry need to post asap and Mike thinking he is scammer

Advice: Lehrry should not ask for post first without any deposit

Mike should just tell cannot promise how fast can post it out, cannot rush by today just said so and request another postage.
Seller should understand most buyer wanna to get the stuff on time or ASAP.
If really dun happy, just leave it. said "Sorry, but prefer to do COD only"