I would assume alltackle would have them. But I have been using Island Tackle on Kent Island and just stopping by of the way down. They have been very accommodating and helpful. I highly recommend them. http://www.itofishing.com/
You guys realize that the Joe Shute, Bluewater Candy Jag, and Squidnation Big Heavy are all the same lure, right? If you call a shop and they don't have one, you should probably ask about the other 2. Alltackle has plenty of Jags.
I see your point and agree they all will work if the other will.However as a fisherman when you become particular to a certain color or exact lure in your mind that is the one you must have.The past 3 trips a particular Joe Shute has pulled through for me big time.I have jags, I have big heavys, great lures, next trip that same joe shute in that same position will be deployed.When something works do it again.And again.Then try other lures when that 1 no longer produces as well.This is my theory anyway.Again I cannot argue they are all great effective lures.Find your favorites and they become your must have confidence baits.