There is a certain fascination here with audio that is, how should I say...out of date? A-25s are nice speakers. They're really nice when you find them for $40. When you remove the price factor, they're just one among hundreds of other nice speakers out there. And many are better if you spend some more or look for something that wasn't as ubiquitous. Much of what is popular has become popular not because of how good it ultimately is, but because of how many people were exposed to it, and who are now around to talk about it online. Consider the speaker that wasn't made in as many numbers but is much better... It's not talked about as much, so not as "good" to the world online. But in actual performance, it IS better, it just doesn't have the fanbase because it's more rare.
You will find a correlation to numbers produced and talk of greatness in this hobby. So A-25s, having been very popular, are talked about a lot.
I think they're a great bargain. But the 890C is a more interesting speaker, to me anyway.