It obviously helps a bit if you live within easy driving distance of where you participate in education events. I could never see paying to stay someplace for a night or two, plus food and gas on top of the registration fee. I didn't have to take the clinics when I was teaching, but the regulations have changed. If you want to keep your certified status you have to participate in qualified education events every season or every other, according to the length of the event.
Personally, I don't agree that it should be this way and sort of see it as another way to force members to contribute more money, that often they do not have. If a person has worked toward and achieved certification they should never lose that status, IMO. Maybe they should have to participate in yearly clinics, if teaching, but certainly not lose something they worked so hard to get. For most people it is a proud time when they get that Level 1, 2, or 3 printed on their status. This is ski instructing not nursing or something like that. Sure it is important to keep up on methods and such, but I hardly think that requires paying hundreds of dollars, and sometimes time off of work, to keep a certification level one already has.
That said, it is a matter of where you teach, how many hours you put into it, whether you get private, semi private or group lessons, often determines how much you get paid. Our little area couldn't pay a lot, but I did get a free pass, comps for friends and family and food discount. I mostly did it because of my love for skiing and people. Sharing the joy with people was so much fun. Being in Indiana and near a large university, we had an interesting variety of folks who came to ski. Probably my most interesting group was 6 African students, who were going to Indiana University for a semester. I forget their actual story, but they were never evers, hadn't even seen snow before, were maybe 20 - 25 yrs old, very tall and just wonderfully polite, happy young men. All of them did pretty well, except one, who was rather a klutz, but he had a great attitude about it. We had a lousy rope tow on our beginner hill and he just could not manage that thing. He was all arms and legs that wanted to go 4 different directions. I untangled him and picked him up several times, as he laughed and apologized for not getting it. Eventually he did get up the hill and after falling, finally learning how to get up from a fall and how to simply stand up without sliding down the hill until ready, he managed to make a few "runs" down the tiny slope, grinning ear to ear. His friends cheered and he was as proud as if he'd gone down "Birds of Prey". That group never made it off of the bunny slope, but it didn't bother them. Money didn't honestly matter to me . I'd have taken that class for free, if I could have, for the simple joy of sharing with those guys. I had many similar classes. One private lesson I had was an 82 yr old man. I saw him from a distance, sporting his red and black plaid wool coat, hat with earflaps and looking read to go. Come to find out he had been a skier for many years, was a WWII vet and had been quite a good skier. He was hard of hearing, his wife was ill and bedfast, but he cared for her at home. He lived nearby and decided to take some time away for himself, but even at our small area, he was afraid to ski alone. All he wanted was a companion to make sure he was safe and help him if he should fall. He didn't fall once. He was a bit stiff, but he was obviously a great skier in his younger days. He came back a few times and always requested me. One time I did have to decline, because I'd worked for 10 hrs, about to leave for home, and was beat! I asked one of my male instructor buddies if he'd please accompany this man for an hour or so. My client wasn't so sure about that, but by the time I had taken off my skis, gotten ready to go, etc. I thought I'd see if I could catch him before I left for home. I did and asked him how he liked my friend as his companion for the day. He smiled and gave me a hug, telling me he had a wonderful time, but he then said," I liked him just fine, but he's not as purty as you." LOL
He gave me a big hug and thanked me for suggesting my friend go with him , because they talked military talk and had a nice guy-like time. Yes, my fellow instructor had a good time with this man too.
I know this is a lot of reading, but it gives a person, thinking about teaching, some idea of one reason to teach, if they are not sure about it.
Sure, you can make some money. I did, even at our area, but it wasn't a lot. I got so much more from the experience than money though.
One thing for sure, you can give it a try and if you don't like it well enough to get certified and stay with PSIA there isn't a lot lost. Ski instruction, much like teaching anything, is more of a passion for most I think, than a way to make much money, except in some places and circumstances.
You can go to the PSIA website and find out more about their end of it, except for a few of the links that require being a member to access. Much of it is open to the public though.
Again, good luck with whatever you decide.