For those who use Revolution monthly to kill and prevent ear mites, fleas, ticks, and prevent heartworm, you know that it can get pretty expensive. I've dug up the following prices from different sites online for a 6-pack of the Cat 5-15 lb. size, which is the size that is used for heartworm prevention, as well as all of the other parasites. I have NOT ordered from any of these three places, but I have ordered regularly from 1800petmeds.com. If you call them and provide the competitor's website, they will match any online price, and they also have free shipping. The Revoiution that I have gotten from 1800petmeds.com has always been dated far in the future (much more than a year) and has arrived quickly. I'm posting this in hopes that it might save some of us some money on what I believe is very valuable protection for our ferrets. $56 for 6-pack http://www.petcarechoice.com/index.cfm/fuseaction/site.home $54.95 for 6-pack http://www.petshed.com/revolution.asp $59.95 for 6-pack <http://www.valleyvet.com/ct_detail.html?pgguid=2E87C515-7B6A-11D5-A192-00B0D0204AE5%26ccd=ILS005> Jeff In Memory of Neo Caring for Trinny, Morphy, Baby Girl, Luna, and Dozer [Posted in FML 6092]