I prefer a 28 inch barrel. Easier and quicker to move. 30 -32 inch barrels work fine on sporting clays if you feel comfortable with the weight, but I shoot a 28 inch barrel with 1.5 inch extended choke. Its a custom choke, but I feel more comfortab...
Depending on the gauge, the value varies between $725 - $825. This estimate is according to Jerry Lee's "Standard Catalogue of Rifles and Shotguns". You can see it for free on Google Book too.