Ziggomatic
500+ Head-Fier
Finder X1s for that price is decent. They are more neutrally tuned. Colder than warm in tonality. Lacks body and fullness of sound. Good amount of definition. They would be solid beaters for the price but considering all the advancements in sound now a days at even the $25 price point. Finder X1s aren't gonna wow anybody. That is unless you like your sound reference thin and analytical. They will most certainly be better built than any $25 phone that is for certain.
Not to argue, but I had a much different experience. While I agree the mids & highs could sound a bit metallic with the wrong tips, I found the low end to be fairly warm and well extended. I didn't find them to be thin at all (when I hear 'thin' I think of the RE600 or something).
If you like a U-shape signature, they're not a bad choice at $25 IMO.