Amazon.com now sells used copies of Toilet Training the Retarded online for about $100.
There’s also one review.
I discovered this product and its one review by following an odd link from reddit.com on their page devoted to The Best Writing on Mathematics 2010…
#17 on this list was…
Proporta Elephant Camouflage Kit – NEW by proporta
Dispatched from and sold by Proporta.
And one of the products that customers who viewed the Elephant Camouflage Kit bought instead was “Toilet Training the Retarded.”