I had a gold Oshannus level three, I sold some time ago before the huge drop came but I still lost a fair amount. I may do that on the Axie's, At one point I was breeding and selling them at more than $200 a pop and now they aren't worth even ten dollars.
There are way too many of those courses out there already, and unless you have a huge advertising budget and production budget it wouldn't be worth it. I wouldn't waste good money making a course, it would be hard to recover the investment! lol
Oh my goodness! A gold level 3 Oshannus would have been going for a lot in November 2021 and it's saddening you couldn't recoup your investment. Did you buy it before the bull run or during that bull run?
Check the hype around the anxie game and the developments going on, is it worth it for one to actually hold and keep playing?
I picked up the most copies after the run and I got some good deals, but still lost about half in the end. There is a lot going on in the Ronin chain, several new games that aren't part of Axie built by different companies. I may become a chain with a lot of games down the road and their AXS token from Axie is worth more than 5 dollars a piece. They may recover much better than Splinterlands in the long run.