That one looks great too!
As far as expensive, it is about the same as the Gunzilla I am using.
Paid about $25 for a 16oz bottle at the Harrisburg sport show - have cleaned at least a dozen bp guns and don't think I have used an oz.
I have been experimenting with 1st shot accuracy without cleaning it out or fowling the bore and have 2 of my Whites as well as my bp shotgun hitting the same.
I never minded the cleaning, but this product is making it easier and almost fun.

Steve