Anyone know what service to send a 15 pound box, dimensions are 56" x 32" x 10"

I looked at UPS< and this box to ship, would cost 192.00 dollars

From Louisiana to Idaho.

Just seems to me that is way too expensive. Seems crazy expensive.
Also, where can I get a cardboard box like this?

On the WWW, i found one that costs 68 dollars, that too seem crazy expensive for a box, or, Am i just too old and am not current with our economy??

Try greyhound Bus if you & the recipient have a depot close by each of you. I've shipped a few large planes via them, reasonable rates.