Midwayusa has a special going on for the Vortex Sparc AR red dot sights, 199.00 w/ free shipping and 50.00 midway gift certificate ...... Expires 3/31/17. Just make sure you apply the code to get the certificate, on the product page there is a red tag with text "special offer available" in red. Click on that to see and apply the code.
https://www.midwayusa.com/product/426873/vortex-optics-sparc-ar-red-dot-sight-2-moa-dot-with-multi-height-mount-system-matte