Hey I just decided that I wanted to buy some high quality, strong magnets for my fridge.
I did some googling and came across r/magnets, and then I saw your post here.
I'm looking around a bit and Amazon appears to have a lot of magnets that look similar (in strength, size, etc) to KJ magnets. But the Amazon ones seem to be significantly cheaper.
I know that when it comes to niche hobbies, prices can go up well beyond what an amateur would expect, and there's usually a good reason (usually just increased quality).
It's higher quality the reason these KJ magnets are so much more expensive than magnets I'm finding on Amazon? The specs appear similar, but I also know that places like Amazon can be less honest about their specs.
Here is an example of Amazon magnets I'm looking at so you have an idea what I mean.
These claim to be n52, neodymium and have 33 lbs of pull.
Similar magnets at KJ appear to be selling at ~$10 per magnet. I feel like there must be a significant difference, I just don't know enough to identify the difference.