akodo - I don't know what gun shows you are going to, but where are they charging $200.00 per table?
The shows I go to charge $55-$65 per table.
Okay, let's say $70 per table.
So in addition to normal overhead, you have the cost of the table, the cost of packing up and getting to the show and back, the cost of additional employee or else the cost of loosing sales at your closed store.
Hence, yes, a gun at a gunshow has a larger overhead than a gun in the display case at a gunstore.
Another factor is how humans act. Make a guy pay $5 to get in, and he feels like he needs to buy something, otherwise that $5 is wasted. Hence he often buys something he doesn't really need or at somethign other than a competitive price to offset his admission price, in the process really ending up $20 behind. (This is the same thing with $5 off coupons you get, it often gets someone who would never buy item X for $20 to buy item X rather than waste $5...but the end result is them wasting $15)
Don't go to gunshows to find deals on new guns at the tables.
Go to gunshows for entertainment
Go to gunshows for hard to find guns
Go to gunshows for deals on used guns from the walkins
Go to gunshows to piss of a liberal.
Don't go to gunshows expecting to find prices better than you would at the local gunshop or internet for a new gun.
P.S. you pay an aweful lot more for a glass of sodapop at the gunshow than you would buying a 12 pack at the grocery store...same model applies too.