The cost of the High Load archival quality series has become more difficult to purchase given that Canadian distributors aren't carrying it anymore. It isn't officially discontinued but you now have to special order from Golden. I have a distributor in Edmonton who will process the order(s) for me which helps deal with the exchange, the duty and International shipments, etc.
It wasn't that many years ago when the cost of the paint was a lot less then it is now. The Cadmiums were always the most expensive, but not like they are now. This 16oz of Cadmium Red Medium came out to $350.00 after shipping. The standard colours run between $100-$170 for 16 oz containers. And some colours, like Phthalo Blue, are no longer available, even as a custom product! Phthalo Blue has always been one of my favourites. The custom colours like the Cadmium are also taking so much longer to get.