Cost wise, they are very competitively priced here in the UK so would expect the same for you in USA.
Glisten is also said to last up to 18 months - reading the ingredients list is also says it contains aluminium silicate (abrasive) which means it could be used as a finishing polish and first sealent layer combined, requiring only to be topped with an extra wax or sealent of your choice if desired. Going to be testing this out in the next few weeks to assess its performance, and if I'm happy with it, it will become a part of my detailing like the Mystique has
