New Florida gun law prompts tax refunds for Dunedin dealers

[Gunco]

The city will issue full refunds to gun dealers and gunsmiths who may have been taxed for several decades in violation of state law.Commissioners voted 5 0 Thursday to return a total of $3,600 to three local businesses. Officials also voted to change city codes to tax the firearms businesses at the same rate as other merchants in the future, and to retroactively subtract the corrected tax amounts from the refunds.

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[4thIDvet]

What the hell gave them the rite too tax gun dealers higher in the first place?
So they just make up rules as they go along?
I dont get it.