I live in Canada, the supply chain is not as good as the US, the LFS struggle getting unique fish that are current in US, the price is higher, and there is a ban of fish meds... I just wish live aquaria, wwc or other online retailers could ship to Canada, from an outsider point of view Florida’s seems to be the go to state
Canada is very regional for reefing. If you live in the Toronto area you're probably good. Many LFS have exported to the US in the past. I remember when Canada got cites for Australian corals before America many from the US would come down to the places that also did wholesale. Generally the bigger LFS' in Canada import their own stuff, where as in the US I think it's more common to buy from wholesalers. We lack large scale coral farms and any kind of commercial scale captive breeding for fish though. It's also a big problem that fish medication is available by prescription only. They should at the very least force vets to see fish or setup some sort of digital government fish vets so people can still have access to essential medications.
However if you live outside a big city you are generally out of luck for both fish and corals. There are very few online options and pretty much all non basement options will do the majority of their sales at their storefront and online is just an afterthought. It's slightly getting better but at a very slow rate.
The other big problem Canada has that US doesn't is shipping sucks outside of major cities in Canada. This is something I really wish I knew before moving somewhere rural. Ups/Fedex are outsourced to crappy local companies and I can't even get stuff sent overnight to my location. I can get stuff sent about an hour away but it's no sure thing to make it next day.
I do feel like in general Canada's coral and fish prices are generally lower than the US, in particular wild caught items since as mention much is being imported then sold vs going through more channels. However there are a lot less name brand corals here so maybe you can't find every piece someone is paying $100s of dollars per half inch for. Still many of the name brand pieces make their way to market eventually. I have at one time or another seen most rare fish for sale at LFS, be it gem tangs back when they were still $3500, to Lenardi or any kind of fairy wrasse, or angels that cost $100s or angels that cost $1000s ect. Generally speaking the price tags here are less then you see advertised online in the US.
Obviously the landscape everywhere has changed as far as pricing and importing, but I still long for the days when several different LFS would bring in 500-1000 or even 2000 pieces a week from Indo and everything would be $40-$60. While Australia may have the cheapest coral prices these days they are of course limited to Australian only livestock for the most part. I would guess a country somewhere in Asia is the best for reefing, where they have less restrictions but still a close enough location so that freight is not the driving cost in their livestock. What country is absolute best I have no idea...