I think you made a mistake the engine set sells for Price: $1,749.95 from MTH DIRECTLY , less threw a dealer
Product Catalog: 2015 Volume 1
Product Line: Premier
Product Item Number: 20-3578-1
Price: $1,749.95
Delivery Status: Delivered Dec. 2015
Roadname: Union Pacific
Product Description: 4-8-8-4 Big Boy Speciality Freight Set w/Proto-Sound 3.0 - Union Pacific
Set Features: 4-8-8-4 Big Boy Steam Engine (Cab No. 4000), (5) Flat Car w/(2) PUP Trailers, 1 CA-1 Caboose