A loophole in state law is leaving some Florida legislators to wonder if mega-shopping events like Cyber Monday are hurting the state’s coffers. The loophole allows major retailers like Amazon to sell goods online without charging Florida sales tax, a local bricks-and-mortar businesses must do. Legislators say that’s not only unfair to local retailers, it also robs the state of as much as three billion a year in state and local sales tax revenue. Now, they’re crafting a bi-partisan bill that they say will level the playing field by next holiday season.