How much does this cost to the nearest dollar?

Celestron 6 Schmidt Cassegrain Optical Tube Assembly with Starbright XLT Coatings Aluminum Tube
Large 6 aperture and long focal length of 1500 mm StarBright XLT optical coatings Aluminum optical tube 25 mm eyepiece Visual back 6x30 finderscope Star diagonal Dovetail rail compatible with CG-5 Advanced Series mount 6 Schmidt-Cassegrain Optical Tube Assembly Aluminum Optical Tube Celestron's premium StarBright XLT coatings 1500mm focal length (f/10) 25mm eyepiece (60x) Dimensions 20.5\ D x 16\ W x 12\ H, Weight 11.83 pounds, model number Rank Camera & Photo Products 6235, Catadioptric Te

Price is $840.00

Price: $839.95