Here in Colorado the big three are Big "5" Sporting Goods, Sportman's Warehouse, and Bass Pro Shop. Gander Mtn. is OK but too pricy. A few months ago Remington had a 20% off sale at Sportman's Warehouse on all their rifles. Picked up a 700 SPS Varmint in .308 Win. for $325 (regular price around $400). Big 5 regularly has the 870 on sale for around $269. Right now they have a Mossberg "combo" with both a 28” vent-rib barrel and a 18" bead sight barrel included for $269 (
link).
If you really want it by New Year's, then just buy it. Realistically you'd only be saving like what? $50? Not all that much.