Had it priced at Campers' Inn in Raynham, Ma. Labor cost was $300 plus the cost of the material. For us, our slideout is 12 ft long so the cost for material was @$260. (We looked it up in the parts catalog they gave us.)
Jayco Jay Feather x23j
2011 F150 4X4 Screw, 5.0, 3.55 rear axle, 6.5' bed.