Has the site Camel Camel Camel been mentioned here?
For instance here's the price history of the above collection: http://camelcamelcamel.com/product/B001G7PX80
(You lucked out, $42.99 is it's all time low.)
Sure, following a link from CCC to Amazon does give them the referral credit, but allowing you know you're getting the best deal on something (just look for the ASIN code on the product's page and head to http://camelcamelcamel.com/
and type it in) makes me feel like they've earned it.