Amazon has the Lakeland ChemMax 1 Chemical Resistant Coveralls for only $4 each when you buy a case of 25. Available with FREE SHIPPING via Amazon Prime. These are usually anywhere from $8 - $12 each even when buying a case. It looks like it's only the 2XL and 3XL.
Product: Polyethylene/Polypropylene Serged Seam Disposable Coverall with Hood and Boots, Elastic Cuff, Yellow (Case of 25)
Sizes Available: 2XL and 3XL
I've used these in a smaller size for myself and they are as good as any other chemical suit. It's liquid proof and resistant to lots of various chemicals. They compare them to the Tychem QC which is more popular, but twice the price. According to tests, Lakeland says these ChemMax 1 suits are even stronger and lighter than DuPont's Tychem. At $4 each, seems worth a try.
ChemMax 1 Data Sheet - http://www.lakeland.com/media/wys...heet_1.pdf
Disposable and Chemical Protective Clothing Comparison Guide - http://cdn2.hubspot.net/hubfs/134...9251657073