We frequently receive requests from artists who are offering workshops for large numbers of students, or who may have a studio where several artists share a space. For these situations it may be cost effective to share the purchase cost of materials and supplies, rather than purchase small amounts individually. To that end, we are now making some of our products available in larger sizes. Please keep in mind that these larger sizes must be shipped FEDEX GROUND. Also keep in mind that these larger sizes cannot be shipped to California where art material retailers are not permitted to sell paint thinners and multi-purpose solvents in containers larger than 1 liter. For California artists, please order the standard sizes we offer on this web site - up to 32 oz sizes can be shipped by USPS or FEDEX without problems.