Thanks, Hummingbird. Taking your advice.
The buyer complained shipping was too high, and has gone silent, even though there's a purchase order hanging out there.
I quoted $24.13 via UPS for 6 cutting boards that weigh 23 lbs. UPS actual was $20.13 and I added $4 dollars to cover shipping materials. Plus, it was a residential address, which UPS charges more for.
Frankly, it made me suspicious that this was a personal buy, not a true resaler. That in itself was a signal we should raise our minimum buy.
As of today, we are a week into this with one succesful order under our belts. Lessons have been learned!