There's a bit of a discrepency in the prices of a particular poultry at the Reading Terminal Market.
At Godshall's Poultry, capons are priced at $3.99/pound while across the aisle at Giunta's Prime Shop they are $1.99. Giunta is selling birds produced by Eberly, which are free-range and surgically altered (which is more expensive for producers than chemically altered). I don't know whose birds Godshall's is selling, they they were marked free-range and naturally-fed, so I suspect they were surgically altered also.
If the birds weren't so big (capons usually run somewhere around 8-12 pounds), I'd do a taste test.
If you haven't tried one, do so. particularly if you favor breast meat, since capons, due to their alteration, have significantly larger breasts. Roast them just like a chicken; they'll just need more time because of the size.