Complete lacquer sealing for 178 € ?

Moin together ICh recently got me an offer from “Car-Top” for the varnish seal of my A3`s. The want to have the complete seal inclusive aluminum rims 178 €. Use it Uniglace 2000. Has any of you already had experience with it? Is the price ok? Or would you rather do it yourself with Liquid Glass? Answer numerous, because it will soon spring and then the A3 should shine 🙂