I was hoping to take some technical diving courses but it sounds like the raw materials price is going to go up. Helium is often mixed with nitrogen and oxygen

I was hoping to take some technical diving courses but it sounds like the raw materials price is going to go up. Helium is often mixed with nitrogen and oxygen to provide gas mixtures to reduce the narcotic impact of nitrogen. I think there's been some experimentation with hydrogen/oxygen mixtures but they're a relatively low concentration of oxygen (4%), not to mention that it scares the hell out of me. I wonder what the effect on divers, recreational or professional, will be if/when helium is either too expensive to use for deep diving or just not available? Perhaps neon/oxygen, though that would also be very expensive.