As mentioned, I'm based in BC, Canada but I only do the design/testing work for the tents. Drop is a partner in producing these tents, where they handle actually producing the tents, sales, marketing, customer support, warranty etc. So they are the ones actually producing and selling the tents, and since they are USA based, the pricing for the tents is in USD.
These tents will ship from Drop's warehouse in New Jersey. The estimated ship date is listed as August 31 (see the banner at the top of the page, or details at the bottom). Shipping to Canada is quite affordable ($13 as I recall) but you may be charged taxes/duties when it arrives. Canada has an 18% tariff on tents that is intermittently enforced, plus there is sales tax (5-13% depending on province) and a $10 handling fee by Canada Post.