As it happens I just orderd two from Amazon, branded as Stout Stuff, for $12.83 they will not be in stock till March 16 but will ship for free when ready. http://www.amazon.com/dp/B01M1KBIJ4/
I was going to pick them up but too cold outside and would rather not give MA their 6.25% sales tax so I bought the same on Ebay and paid the same shipped.