GA, my $75 piece-of-crap is a First Act. Don't dis it too much.
Don't junk it.
I took the nut out, sanded the bottom of it (slightly), and re-installed it, lowering the strings.
Be SUPER-careful if you do this - it you take off a millimeter too much, you can ruin it.
Then I straightened the neck a tad. Screw the bolt in NO MORE than 1/4 of a turn, and give it 3 DAYS to re-adjust and settle in.
No more than 1/3 turn at a time. If the rod snaps. it'll probably cost you about $300 to fix. And be SURE to give it 2 days to settle in, before doing sunsequent adjustments.
If you want to lower the strings, try sanding the nut FIRST. Sand off (LEVELLY) a thickness about equivalent to the "B" string, and try it.
That's not much, guy . . .
Only adjust the neck if you can see a pretty big bow in it. There's supposed to be a tiny bow, to keep the strings from buzzing . . .
After doing this, I found that 2 strings buzzed in the 13th fret. That is; when I held the 13th fret down, the string hit the 14th fret. But when I fretted on the 14th, the 15th fret was just fine.
The frets higher up the neck hadn't been installed quite levelly.
This is proof that it's a crummy guitar. But I fixed it.
My solution, and, I kid you not: a hammer.
Pow! Pow! Hey, for $75; what did I have to lose?
But it worked great. And - what a difference. That $75 guitar now plays like a $300 guitar.
It doesn't LOOK like a $300 guitar. I don't give a poop.
GREAT practice guitar . . .
My biggest complaint with it is it's hard to tune . . .
But - you would not BELIEVE the number of people who have told me, after hearing it, that it's a real good guitar. Everyone who hears it (not 'sees' it) says "Wow! That's a really expensive guitar, huh?
I love the look on their faces when they hear me say, "Nope. I bought it brand-new for $75."