I think I need to place an order very soon (next few days). Once you put an order in, shipping cost is next to non-existant, especially for something like that. I'm guessing it isn't much different where in the US you ship from. For bigger stuff in the US, USPS ground shipping is usually much cheaper, but maybe not for something small like this going to Canada. So, long story short, I can probably add the ring compressor to my order and ship it on to you, Tim. I did see they get a 5 star rating from the guys who reviewed that set, as well as our friends on here, so apparently it is a well liked set of tools.
Let me know if that's what you want to do. He!!, we might even order the diaphragms just for sh!ts and giggles.