I know I harp on this constantly, but if what you're looking for is a brand-spankin' new SIGlock&K XD11A1, gun shows are generally a waste of time, unless you just want to price shop several vendors without having to drive around or use up airtime minutes on your phone.
Given the economics of setup, teardown, table fees, and the realities of either closing the storefront for the weekend or doubling staffing requirements for ditto, prices on new guns from brick & mortar FFLs usually aren't going to be any cheaper at the show on Sunday than they will be back at the store on Monday.
On the other hand, if what you're looking for is unicorns...
I've been looking for Vetterli ammunition off and on since I purchased the rifle back in... '03? '04? I've acquired a couple of rounds, one to put on the display board and one because... well, because. But usable ammo? Hen's teeth.
Now, the ammunition was loaded by Remington UMC well into the smokeless powder era. The US civilian market has always been a black hole for the world's military surplus, especially before GCA '68, and back in the first part of the last century, US shooters on a budget could pick up one of these old Swiss battle rifles via mail order from Bannerman's for a song.
10.4x38R may have been declared obsolete as a military cartridge by the Swiss, but sold commercially as the .41 Swiss Rimfire, throwing a 300gr outside-lubed lead slug at ~1400fps, it was still seen as a viable short-range deer load. Production of the commercial ammo stopped with the advent of WWII, however, and never resumed afterwards.
When I stumbled across this full box of ammo at yesterday's show, with the lube on the bullets still greasy no less, I had about as much chance of saying "no" as I did of flapping my arms and flying.
Also at the show, I discovered a nice little Bayard 1908 in .32ACP, which would make a nice companion piece for the .380 model I already had. When I read about the hoops that others have to jump through just to keep a handgun licence, it makes me thankful to live someplace where a handgun purchase requires naught but the exchange of money and a handshake. (Although it's customary to flash your INDL and LTCH as your good guy bona fides.)
.380 on the left, new .32 on the right. Also, unfinished projects: Namely, an AR lower and a Ruger MkII 22/45 receiver/barrel assembly, waiting on me to scrounge up a bolt and gripframe.