This is a thread where geography matters, a lot. I'm sure our members in warm places are rolling their eyes at us.
Canada is a perfect storm of high prices and slow delivery when it comes to ordering fish. Next day UPS from the nearest major fish importing centre, 850 km away, is $170 a box. Our national mail system delivers to an exposed, outdoor metal box up a hill and about a km away and can take 5 days for a 2 day guaranteed box. It is very intertwined with Fed Ex.
Not long after the new efficient private sector crew took over the mail system, I shut my side business selling rare livebearers because all packages were left in outdoor boxes, while costs went crazy. A $20 pair of fish could cost $50 to ship, and would arrive, well, whenever. Everyone blames the seller.
I have a lovely little local airport, but because of fuel costs, all the airlines using it have planes too small to accept fish boxes.
I get fish shipped to me by friends, and they are experienced professional shippers. It seems sensible to me to limit the season to not too cold, and not too hot. Yesterday, it was well below freezing with ice on the daphnia containers, and today, it is expected to be 18c (great for the kids in their Hallowe'en costumes!). Once it gets completely unpredictable...