It wasn’t clear to me that the grade at the top changes as you choose options. Most tools would show the score at the end of the process. I scrolled to the end and then hit the email sign up, as if it was the button to see results.
I’d suggest to make it impossible to select mutually exclusive options. For example, selecting that the record is still sealed cuts out a lot of the questions, but there is no indication in the interface.
EX- / VG++(+)
Skip on A2, otherwise MINT
SOLID PLAY COPY
"a badly warped record is most of the time (if not all) also audibly warped."
I find that there are other variables involved. I have warped records that are standard 33rpm, which play fine. If the record is 45rpm, there is a much greater tendency to skip.
The type of music also matters. With Music with a greater dynamic range, or with more "quiet" parts, you can "hear" the warps as the needle bounces up and down. With louder music, this noise will be hidden by the music.
Nice tool, I'll try a few more examples.