On a whim I checked Amazon. The My-Weigh iBalance 201 balance is offered for about 99.00.

Mr. Thompson created a forum, http://forums.homechemlab.com, as a companion to the Illustrated Guide to Home Chemistry Experiments: All Lab, No Lecture (DIY Science). I noted the balance on the forum and I hope other people contribute to the Home Chem Lab forum over time too. I think it is a great adjunct to Mr. Thompson’s book and resource for amateurs like me.

I also added this item to my own storefront. My storefront is an ongoing experiment.