There's another choice in USPS FL boxes - the "game" box:
Priority Mail Large Flat Rate Board Game Box | USPS.com
Inside dimensions about 23-11/16" x 11-3/4" x 3", more volume than a regular Large FRB, but same price. Just tape the heck out of it before shipping, and remember that the max weight is still 70lbs (quite a bit,
think of your poor postman).
The last big recession a decade or so ago, the bottom just fell out here. Held on for almost 2 years on long term stuff, but through 2009 and into 2010 it tapered and then came to an abrupt end. October of 2010 I was able to bill $510. Thankfully it ramped up after that..
But... For quite a few months, selling drops on e-bay and on here paid the bills. Home Shop Harry's. A 50lb box of all
kinds of material.. They love it.. Throw in some in some stainless and some delrin, and bits of different aluminums, and
maybe a sliver of Ti. Paid the bills for at least 3 months.
But those poor girls down at the post office, and they really are awesome here in Hatch.. After about 2 months
of those 50-70lb boxes constantly they all had messed up backs. So started loading the boxes up and bringing them to
different post offices in the area.
Too bad the Miserable Swamp Witch at my local(to my house) post office wasn't there at the time. I would have
loved to have put her out on disability. But that's another story for another day.. And it took a lot
of restraint to only call her a witch.