Is this track rare since it's self-released?

Yes, being self-released by Болотный Катафалк in 2019, it holds a niche appeal for collectors of independent Hip Hop.

What is the format and release year?

The track is available in MP3 file format and was released in 2019.

No, it is a self-released track under the "Not On Label" designation.

Name: Болотный Катафалк / Неплохо – Иуда Алла (File, MP3)
Brand: Болотный Катафалк / Неплохо

Hip Hop

What Иуда Алла by Болотный Катафалк / Неплохо is worth on the used market.

Label · Not On Label (Болотный Катафалк Self-released)Format · File, MP3Genre · Hip Hop

Used

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New / Sealed

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Price data verified against · 1

Иуда Алла by Болотный Катафалк / Неплохо (2019) on File, MP3. The Discogs marketplace floor is null with 0 copies currently for sale.

Pressing, country, and condition (media + sleeve) move vinyl/CD values the most — first pressings and clean copies command a premium.

Is this track rare since it's self-released?: Yes, being self-released by Болотный Катафалк in 2019, it holds a niche appeal for collectors of independent Hip Hop.
What is the format and release year?: The track is available in MP3 file format and was released in 2019.
Is this track officially on a major label?: No, it is a self-released track under the "Not On Label" designation.