Our Truma will be due for decalcification soon, and since we didn't get a chance to go south the last two winters, I went to a local RV dealer to see if they had the tablets. I found some, $60 CDN, OUCH! I paid $20 USD last time in Quartzite. I checked on Amazon.ca and it was nearly as bad, plus shipping.
So I went to the Truma website and sure enough $19.95 USD. So I created an account and went through to checkout to see what shipping would be. FREE SHIPPING to Canada. I ordered 2 sets, and the Visa bill was something like $52 CDN. They took about 2 weeks to wander their way around USPS and Canada Customs and Canada Post but arrived safe and sound.
Thank You Truma!!