Most shows charge a $5-$10 space fee for outside sellers. This is a better deal if you have many birds to sell. Of course if it is rainy, hot or muddy, then your birds stand a much better chance of getting sick and exposed to sick birds.
Although inside sale coops cost $5 each (or more), the main advantage to selling indoors is that the birds often look better in show coops and many sellers can get $25-$50- $100 or more for a pair or trio of birds inside - when most birds sold outside are $10-$20 pairs.
When you purchase an indoor sales coop it is yours for the day, you can rotate as many pairs, trios or groups of birds through it as you can sell, your sales are not limited to the one set of birds that you place in the coop to begin with. I've seen exhibitors with an inside sales coop or two outsell the outside sales vendors by just keep refilling as soon as he sold the pair or trio that was in it. I've also seen people go outside and buy the bargain birds for $5- $10 each and take them inside and sell them from an indoor sales coop for twice as much.
Of course these are generalities, but it seems that at the shows I go to, the outside sales areas attracts the 'traders & swappers' and the inside sales coops are mostly filled with excess birds from actual breeders and exhibitors. There are always exceptions to the rule!
Matt
