The following are tools and services that I have used or tested and am an affiliate and receive a commission for promoting. You will not pay extra using my link though and in many cases you'll save money.
Jungle Scout Chrome Extension Only: Quickly scout out products with one click. I've used this daily for 5 years. Details here
FreeeUp: The only service I recommend for pre-screened, pre-trained virtual assistants to help you with your business. Details here
Helium10: Similar to Jungle Scout, but offers way more tools and options (ideal for Private Label sellers). Details here
SMARTFBAINCOME - 50% Off First Month or
SMARTFBAINCOME10 - 10% Off Every Month Helium 10 Or Yearly Plan
Rakuten: Check out Rakuten.ca! It's a great website that actually pays you Cash Back every time you shop online and it's free to join! Rakuten.ca works with over 750 stores that ship to Canada including Indigo.ca, Amazon.ca, eBay, Old Navy, Hudson’s Bay and Groupon. Get a $5 signup bonus cash back using my link. Details here
Quickbooks Online: The only accounting software I recommend for Canadians selling on Amazon. Get 50% off your first 6-months subscription using my link. Details here