API Freshwater Master Test Kit $15.99
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4454
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=4454
Here's a DRsF&S cheat thingy, in every product code, it has CD in front of it. If you replace the CD with YL in the search feature, it makes certain thing cheaper.
For example, a Freshwater Eheim 2126 filter on F&S is usually $269.99. If you take the product code CD-92210 and put it in the search bar, but replace the CD with a YL (YL-92210), the price is lowered to $229.99. This only works on a couple of things, but you can add it to your cart, print out the cart and price match it to a store if you want, or just order it on-line.