This is for the third tier of membership. The Advanced membership charges cover studio usage (lights on, air/heat, water, etc.) along with the use of the slab rollers, spray booth, pottery wheels, any other tools supplied by the studio as well as house glazes and firings.
Advanced Membership tier is $119.95 a month. It includes all of the above-mentioned items along with:
Additional clay is available at $50 per 25 lbs. That covers the clay, house glazes and all firings, just like your base amount of clay and monthly dues.