At first I too was mad at the proposed tax. It seems like the Cook County Board are a bunch of idiots. Each time they propose a new or higher tax, their tax revenue actually goes down, more and more residents of Cook County go to the other counties in Illinois to do their purchasing. (the city of Chicago has the same problem with residents going elsewheres)
Like most I too was unaware that I am already paying a federal excise tax on firearms of about 10% charged to the distributor.
As to Cabela's closing their Hoffman Estates store, I do not know, since most of their items are other than firearms and will not be effected by this new tax. Those that will be hurt by this tax will be the LGS like Lyons Guns, Shore Galleries, Illinois Gun Works and Maxom Shooter Supplies who's main business is the sale of firearms and supplies.
Even Gander Mt. is in DuPage County along with most of the LGS that are in Kane, McHenry, Will, Joliet and other surrounding counties not effected by Cook County taxes.
Without a doubt this is a stupid move by Cook County that needs more tax revenue to fight an ever increasing crime rate, but they are going about it totally wrong.
Jim