Welcome to the forum!!!!!!!

There are both new and used options available to you in Canada.

Try Epps. They have lots of various doubles in stock, and currently do have a used Merkel in .470. Both Wolverine and Tradex also have several new .470s in stock. Ralf Martini in Cranbrook has several older used doubles for sale as well, and there are others across the country that carry what you seek.

Prices vary and your mileage will vary wrt to deals, but generally you will not find anyone giving them away and you will see $10k give or take vacate your pocket for these entry level but quality doubles in .470, e.g., Merkel, Chapuis, VC, (and Heym for a little better build / finishing quality and of course a little more money). The good news is that these sellers are priced in CDN currency so it is closer to $10k of Monopoly money vs $USD with the current dismal exchange rate.