I would caution against thinking the 7.5x55 Swiss is a cheaper alternative, if you don't reload. True enough it'll use the same .308 diameter bullet, but that's also only an advantage to the reloader. It may be cheaper now but other than the K31, I can't think of another rifle in the US that uses the round. It's guarunteed to be more and more expensive as time goes on. I bought mine because, other than it's accuracy, I can use the same bullets I'd use for reloading my 30-06 and 308's.
Other than echoing the take up reloading chorus, the best advice I can offer is simply wait it out. 308 will get less expensive in the future.
"And remember, Abraham Lincoln didn't die in vain, he died in Washington D.C." - Firesign Theatre