headed to a gun show in a little bit?s

I don't remember the last time I've been to one and don't know what to expect as this is in Robertsdale, AL near Gulf Shores / Orange Beach/ Foley AL etc.

A friend went yesterday and said they great deals on Ammo and had a good amount of bad arse AR style riffles.

Question: will I be able to get a great deal on handguns? I know what they cost online vs MSRP. What are some tips on haggling over price? If I can't get a deal that is very close to what I would online then I won't buy. Plan to take my phone in with me and have saved several sites that have the handgun I want in stock and at great prices. Will use that as a gauge on the deals.

Suggestions ? TIA