I have useed camelcamelcamel a few times and it appeared to work in the past. The latest was for a package of packing tape that was 11.89 until I put it in my cart and it went to 15.89. I added it to camel with the target of 11.89 and today (2 days later) I got an even better price from camel of 11.39. Clicked the link and guess what? It's still 15.89. Either camel doesn't work or Amazon sellers have some kind of scam working with cookies - they know its you and instantly change the price.