Your definition of cheap and mine are not the same. Looks like the price for Lapua Brass is the same as the price for .308 Lapua Brass.
Lapua doesn't make 280 brass. I'm not saying the Swede 6.5 brass is inexpensive, I'm saying it's lapua, and cheap for lapua. You can't get lapua in many if any of the calibers you listed and to me that is a huge plus.
I'd rather be shooting $0.70-$0.80 lapua brass than $0.58 remington.
http://www.midwayusa.com/product/1601323081/remington-reloading-brass-280-remington
Man, this whole thread is in Greek.