Really? I don't keep up but I that was a bit pricey.Sounds like a pretty good deal at today's prices!
How "not flat" are the 4x8's? If not bent too sharply they should be fine.
His
8x4 2 @ $50
10x4 1 @ $60
$200
Mine (not sure which was the 5 and which was the 6)
8x4 5pcs/6pcs
10x4 6pcs/5pcs
$560
Either way I bought mine last year.