Aliexpress or Banggood are usually the best sources for sales, depending on time of year.
usually $100 less than Amazon,. I even had mine pass customs without the usual extras you'd pay with amazon anyway.
This was the store I ordered mine from was "Hantek Official Store":
https://www.aliexpress.com/item/1005001844918818.html DHL shipping though, eww. Might be worth searching for a few better sales from other vendors.
Avoid any DHL shipping to Canada, its fast, but they LOVE to collect extra fees and taxes, and delivery fees.. and processing fees.. and extra bonus fees. Then they add taxes to their fees.. and another fee to collect the taxes.. Their hidden fees they add post-shipment are astronomical and tend to far exceed even the value of an item.