So in case of Etsy, it's easy, I create Digital item, which is non-refundable, and I doodle a picture of DJT and they purchased it (if they download my DJT doodle, no idea, so far positive feedback) and that allows me to pay for the DDP for Chitchats/Stallion.
For Ebay it's difficult because all items are refundable, right, so basically here I would use like Shopify check-out page until Ebay comes with global shipping for Canada.
That allows me to look less foolish and suspicious rather than asking buyers sending me paypal money.
One obsevation with Chitchats, it seems to me the process with entering manufacturing details is easier in Chitchats, Stlalion requires approve, it's going through screens and settings, and creating inventory items and they charge for it, crazy complicated at Stallion to add ad-hoc item to ship with DDP. No thank you - no Stallion - this sucks so badly. Chitchats doesn't ask me to run in circles, they have it all on one page. So I guess I am back with Chitchats more for smaller stuff.