At Target, buy one pair of regular-price men's, women's, or kids' regular boots, and get a second pair for 50% off. Plus, all orders bag free shipping. Sale ends November 15. Some best bets:
Merona Women's Neida Winter Boots for $44.99 (second pair for $22.50)
Dickies Men's Trader Genuine Leather Work Boots for $79.99 (pictured, second pair for $40)
Before you send in your tax return, double-check that you haven't made one of these mistakes that can trigger IRS scrutiny.