What is the measure used here for woods? Is it unit?

Question

Crossbeam 5x10x4 m 5 units @ $2
Crossbeam 5x10x5 m 6 units @ $2
Wood for truss 5x7x5 m 6 units @ $2

Answer 1

i could be mistaken, but the way i would interpret these measurements is this. You have 5 crossbeams that are 5 meters wide, 10 meters long, and 4 meters high, each of which is $2. 6 more crossbeams, but these ones are 5 meters x 10 meters x 5 meters, again $2 each. You also have 6 pieces of wood for a truss, each 5 meters x 7 meters x 5 meters, again $2 each.

It seems a little inexpensive for wood, though, so i'm probably wrong somewhere.

Answer 2

m stands for meter (American) or metre (British).

but i figure $2 for such them is dirt cheap... unless you were only giving examples :)