I hope you find a great deal! Gun shows are not necessarily the best place to find a deal, but deals can surely be found there. Stay far away from any classic type rifles, or collectibles as most selling at a gun show think their "collectible" is a one of a kind (if it even is a collector piece). Best things to look for? OMHO it's the average rifle. Say something like a Remington m700 BDL in 30/06. Or maybe a Ruger M77 in .308 or 30/06. Those sellers know there are LOTS of these rifles around and they need to be competitive to sell them.
Older rifles can be bargains as well. Anything carrying an Honest to God FN (Fabrique Nationale) action is something to look at very closely. A
Husqvarna? An I
nterarms MKX?
BRNO rifle?
Mauser M98 restocked and/or rebarreled? Off brand names like a
Sears Ted Williams bolt rifle? (a M70 in disguise!), Even a plain Jane 1975 Winchester M70 with push feed and no one caring because it ain't a pre '64!!!!
I'd much rather find an older bolt rifle like any one of these and pay $300-$400 for it than have a new low level Remington, Savage, Mossberg, Stevens, etc. Some of these rifles would be $1000-$2000 today with the build quality they exhibit.
Look for these same guns at pawn shops too. Pawn shops should be hoppin' from November thru February with guys needing money for Xmas gifts thru tax time.

Good Luck!!