If you are looking for a Barker waste-water tote, check out RVPartsPro on eBay: http://stores.ebay.com/rvpartspro/?_dmd=1&_nkw=barker.
I just purchased their last 32 gallon, four-wheel (pneumatic tires) blue boy for $207.76, which includes shipping! Previously, the best price I could find was $241.57 on Amazon, which also includes shipping.
Their online store still shows some other Barker totes available, so thought I'd share this link in case anyone is looking. And who knows, they might get more 32 gallons back in stock.
For what it's worth, I've also scoured Craig's List the last few days, and got fed up with people asking $150 or more for used totes with worn old-style wheels and/or only two wheels. Granted, I found a couple of oldie but goodies in the $50 range, but they were either too far away or not quite what we needed. So, we decided to suck it up and buy a new one so we have it for our upcoming camping trip, in which it will definitely be needed for grey water.