How much does this cost to the nearest dollar?

Extender 2.0X (Doubler) for Nikon D5300
Multiply your lens' focal length by 2.0x with the telephoto extender. This extended will maintain full metering with compatible cameras and lenses, and will also support the VR function found on many current lenses. This teleconverter maintains the resolution and contrast at a high level. Nikon mount Teleconverter 2.0x Magnification Factor Communication Between Lens & Camera - Applicable For AF, AF-D, AFS Lenses (NOT FOR G Lenses) Maintains Metering and VR 10 Year Warranty model number Available April 14, 2018, Manufacturer Hila, Brand Hila, Lens Type Teleconverter, Telephoto, Camera Lens Description 10, Lens Design Prime,

Price is $249.00
Price: $249