My advice Steve if you bought a topper from Dan at Tilt Topper, get him to give you an invoice to show it was made in the USA. Then have it shipped to Markham with Shippsy. You will have to pay $7CDN to have it delivered from their depot in the US to Markham but you avoid the duty and it is likely a lot cheaper for Dan to ship it to NY State than Ontario. Use this link and also save $10CDN on your first shipment. I bought an AC/DC topper from Dan and I only had to pay the GST and $7CDN. It does take him a while to make it, unless he has it in stock. You usually get stuck with Duty if you ship direct. With Shippsy, anything under $150CDN is not subject to duty. OR if you can show it was made in the USA, then it doesn't matter what the cost is, no duty if product is made in North America.
portal.shippsy.com