What every buildable costs in Build Supplies, and how many pallets and vehicle trips that really means.
Every structure costs Build Supplies, drawn from the FOB. Not from your pocket. Supplies cost $10 each individually at the vendor, and a Build Supply Pallet is $400 and takes 4×2 inventory slots.
The raw supply number is not the thing that costs you. Supplies move as pallets, and a vehicle carries a whole number of them: a truck takes two pallets a trip, a helicopter one. A wall that needs 12 pallets is six truck runs across contested ground, and that is the real price.
Delivering the wrong pallet is a wasted trip. Ask the builder what the FOB is short of before you load.
Hitting the yellow X marks while building speeds construction considerably. Releasing and re-pressing between contacts cancels the backswing, which players report as roughly tripling build speed.