Check out sites like Armslist, and Backpage for the area your in. Lately there has been someone on the back-Page Raleigh site with bricks for like $40. Yes that's about double what they used to be, but still way below the $70 plus some are asking. Basically the prices have started to fall back down on everything but there are still way to many individuals out there who spend their time looking and buying it up cheap and then selling it for twice what they paid.
As far as the gun shows, I've been to nearly every one that has been in my area since around October of last year. I saw prices low, then saw them go through the roof, and am now seeing them coming back down to somewhat normal levels. That is on about everything but the .22 LR. For whatever reason it has been hoarded to the point that it's nearly impossible to find the cheap stuff anymore. The 50 round boxes of the 'good' stuff are more available now than they have been in 6 months or so, but your still going to pay a premium for it, over the cheap stuff, just like always.
Beyond that all I can say is good luck.