How much would it cost to remove 25 green giant arborvitae?

I have 25+/- Green Giant Arborvitae that all have to go. They're on a span of about 60-70 feet along the yard, and I want to replace them with smaller Leyland Cypresses and a few Aucuba. The trees are about 20-25 ft, varying due to exposure through a large opening in the canopy above. As a two man job, hauling and dumping everything and possibly building up the soil along the treeline, how much should I expect to pay?