well it's a starting point.
So 1.62 a pound (before tax?)
leaves 4.38 cents.
If you're just smoking them, don't forget pellets, electricity, gas as costs. Labor. Time for you to get them prep them.
Are you putting rub, or sauce on them?
Wrapping in foil (cost of foil)
Are you pulling for them or they doing the work)
See how it adds up. If you're doing all that work, you'll eat into the 4.38 real fast.
Figure a price, that when it gets busy and word of mouth sends them to you, you'll still make money. But if you start doing 20 or 30 of them the labor takes more time.
I'd price it higher, but help them figure out their costs.
If they serve a 1/4 sandwich, lets say for $5.00 (plate, chips) If you cook a 8 pd butt at 1.62 = $12.96
8 pounds cook will be 4 pds after cooking. 4 x 4 is 16 servings x $5 is $80 bucks.
Now WHY cut them a deal
Remember this. Once you set a price, the word gets around and it's hard to change.