Recommendation for an FFL?

[cysoto]

Last time I did an FFL transfer (Alpha Pawn, S. Broadway in Denver, $20) they charged me sales tax on my original purchase price I paid to the out of state vendor.

Is this correct? Seems to be conflicting info...

I'm looking at some more expensive items to FFL transfer and would like to avoid sales tax if possible.

I don't think they are supposed to charge you any tax for receiving a firearm. They are providing a service not selling an article (which you bought from out-of-state and had paid for already).