If you do some searching, you can find the toggle switch covers for a better price, but there are definitely varying degrees of quality. There are a lot of cheesy-chromey plastic covers out there for the nitrous-oxide crowd. No matter what, make sure you buy either from one source, or make sure they are all the same manufacturer.
Some manufacturers also offer them in a few different colors. Also make sure to make allowances for the extra space they take up in both the open and closed position.
SMB-less as of 02/04/2012. Our savings account is richer, but our adventures are poorer.