I work in a school science department and part of my job is ordering chemicals. Sadly, across the board since the pandemic hit, prices have risen anything from 30% to eye-watering. And the prices are not stable. I place an order, the finance team finally deigns to approve it and pass on to the supplier....the price might have gone up or down 100% in the intervening week.
The chemical industry in particular was hit by supply chain issues, global shipping problems and no doubt by the war between Russia and Ukraine which messes up raw chemical production in Eastern Europe and shipping lanes. There are other issues elsewhere in the world where volatile politics has lead to established shipping routes being abandoned for longer but safer routes. Lead times for some common chemicals have also gone up from days to sometimes months.
Add to all this the energy costs which most of us know have spiralled. In the UK we are somewhat protected by price capping for domestic homes but businesses are not protected. Nor are the facilities manufacturing the raw chemicals, wherever they might be located.
Costs more to produce the stuff. Some businesses are still trying to recover from Covid times, takes 3x as long to ship in some cases....the costs add up. And are unstable.
Even some relatively big players have had difficulties, see Kodak and Fuji struggling to obtain chemicals to manufacture film, everyday items like shampoo have been reformulated, the couple of major-ish companies still making analogue recording tape couldn't obtain gamma ferric oxide in 2022 as the price simply skyrocketed.
Chemical prices are very unstable. In my past dealings with Process Supplies, they are a *very* fair company. I have no doubts, they will not be gouging customers. The simple truth is that supply of industrial (and by extension educational and photo) chemicals is very unstable as are the prices. Keep an eye on the prices of chemicals you need, and try to buy when they're a bit lower.