This Spalding NBA 54" Polycarbonate Backboard System drops from $389 to $197 at Walmart.com. Plus shipping is free. The next best price elsewhere is $230. The 54" backboard adjusts from 7.5' to 10', has a 34-gallon base, and steel pole construction. It's also one of the best-reviewed portable basketball hoops in this size, with 4.2 out of 5 stars from over 680 Walmart reviewers. Sales tax is charged in most states.