Sounds similar to the shop who helps me, except he can do 1/4 box. Unfortunately getting a group together here isn't likely just arn't buyers, occasionally i'll have someone contact me because they want some snakeheads, and i'll jump at the chance to split a group as long as it's a species i dont already have. but 90% of the time i go through the effort of finding the fish setting up shipment etc and then they back out last minute and i end up with the full order.
They are pretty rare in most of Canada, but especially rare on the east coast, there just isn't enough population/demand for any sort of exotics to make it this way.
With snake heads it's worse because many suppliers ship through the US where snake heads are illegal, on top of that within Canada they have ban's in Ontario , Quebec, and now BC (although they dont seem to be enforcing it in BC YET). These 3 provinces hold some of the most heavily populated urban hubs of the country so many Canadian distributors are located in these provinces and many imports from other countries have to pass these provinces to clear costumes along the way (like all shipments from India for example , which effectively ended my chance at some decent priced barca lol)!
So really for snakeheads in canada that all are coming in on the west coast of the country unless i've ordered them lol. When they do pop up out west they get snatched up quickly. I have a feeling BC will crack down hard and soon as laws are in place but not enforced and shops still sell them. I doubt they'll bother hobbyists but all it's going to take is one bad news scare/hype again and I'm sure the Gov will take that next step and crack down hard on the shops who have them at the time to make a point. Just like they did in other provinces.