While people were talking about Chicago's proposal to tax bullets, they already had a gun tax for the same reason

There has been quite a discussion about Cook County's recent proposal to tax bullets.  But, apparently, there is already a $25 county tax on each gun sold ("The levy represents the first time a major city has used taxation to mitigate the costs of gun-related violence.").  There are already other fees.  To get a gun in Chicago you have to pay for city registration fee ($100 plus $15 for each gun) and the state FOID card ($10).  Of course, there are also training requirements that must be met and I have found one place where you can get that training for only $125 (indeed, it is advertised as "The Best-Priced Chicago Firearm Permit Course in Illinois").  Not including people's time costs, the fees here come to a total of $265.