Domain Registry of Canada - Scam?

I received a pretty official looking letter with several of my domains listed, and stating that it is time to renew. Of course the price is 4 times higher than what I actually pay now, and I know that I registered using another company.

How many fall for this, and pay up to this company?

The good thing is that at least they mention "This notice is not a bill" in bold letters. I remember previous letters were much more sneaky.

Don't do it! Stick with your current registrar and read before you pay!