Rolling into the final weekend before Christmas, retailers continued dangling lower prices to bring crowds out today for what normally would be the busiest sales day of the year. These are not normal times, however. One seer, ShopperTrak CEO Bill Martin, thinks the mobs of Black Friday were as good as it will get this year. Plenty of shoppers — the average shopper is 65 percent done — could still make for a big finish, according to a National Retail Federation survey. And 45-million — 24 percent of all men and 24 percent of all 18- to 34-year-olds — have yet to buy their first gift. Weekend weather offers no help. Much of the country is buried in ice and snow, while a sunny weekend in Florida will hurt apparel retailers who slash prices on all their remaining cool-weather gear.