Texas Department of Transportation / TxTag.org review: Incorrect billing

As a consumer of the product offered by TX Tag I of course am willing to pay for services rendered, i.e. driving on a road. What I am unwilling to accept as anything less than illegal is that they can tack on additional fee of "mail fee". This is predatory and made up to increase profit margins and charging more than the prepaid postage stamp of $0.05 cents is absurd. In fact they attempted to charge me $1.15 more than 1000% the actual cost. Multiply this by the tens of thousands of Texans and you have racketeering. I would urge whomever is responsible in taking care of these complaints to issue a cease and desist immediately at the highest level.