Postal Money Order versus Bank Money Order ???

Same, both are as good as cash.

I have also come across those Postal MO requests from larger scale sellers. My guess is that the specific requests for Postal is a counterfeit and reliability issue. Bank M.O.s are more anonymous and the Postal system isn't going anywhere. I really don't know, though.

there is a difference between a USPS MO and a bank money order.

a hold can be placed on a Bank MO if it was reported stolen, lost, or for other reasons....eventually it will likely have to be paid, but it can be held up for a long period.

A Certified Check is guaranteed. they cost a lot more money to purchase.

also,. there have been several real looking fake Money orders floating around.

a USPS MO cannot be stopped, it is as close to a Certified check as possible, and costs very little to purchase.

I once purchased a pair of speakers that came completely damaged and misrepresented, I was able to hold up payment of my Money order for a period of time.In the end I got screwed, but i made the crook sweat for a while.

No one has said this yet, BANK money orders cost up to
$5.00 and have a limit of up to $300 total.
POSTAL money orders have a limit of up
to $1000 and cost $.90 - $1.25 ALOT cheaper.

USPS money orders are valid only within the U.S.

In favor of bank cashiers' checks, I recently sent one in payment for an overseas item, and the airmailed check never arrived. My bank was able to determine immediately whether the check had been cashed (had not been), placed a cancel payment on the check, and will return the money to my account. If the check had been cashed with a falsified signature, the money could probably have been recovered by arbitration between the issuing and paying banks. At least you get your $5 worth when it counts.