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4 Cassette Tapes From the '70s Worth a Small Fortune

Keep an eye out for these rare tapes.

By Michelle Smith , Edited by Sara Albertelli

Updated Oct. 12, 2026

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Looking for a way to eliminate some money stress without moving far from your front room? You might be able to give your budget a break by sorting and selling things you already have lying around the house. For instance, if you're a music connoisseur with an old pile of tapes in your spare room, here's a good weekend project: comb through your old cassettes to find out if you've held on to a '70s classic whose worth has multiplied over the decades.

Keep reading for our list of some of the highest-selling cassettes from the '70s, then dive into your collection to find out if you've been sitting on a gold mine.

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Why aren't there many valuable '70s cassette tapes?

If you've spent any time on niche music-resale sites like Discogs, you know that tapes from the '80s and '90s have sold for hundreds of dollars, but far fewer tapes from the '70s have brought sellers much cash. There are a few reasons for this trend.

First, while cassette tapes were invented in 1962, they were originally used for dictation, not for mass distributing music. Their popularity took off in the late 1970s and solidified during the 1980s (thanks in large part to Sony's Walkman), so the '70s can't compete with the '80s for sheer cassette tape volume.

Second, cassette tapes aren't all that sturdy: most have a lifespan of around 30 years. While unopened tapes from the '70s might still play, any opened and used tapes have likely degraded in sound quality or become far too brittle to play. The poor condition generally means the tape won't be worth as much.

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John Lennon's "Just Because" recording, 1973

Estimated market value: $38,000

You aren't likely to find this unique tape in your collection: the six-minute outtake recording is truly one of a kind. This bright orange tape was gifted to Lennon by Jesse "Ed" Davis, and Lennon in turn gifted the tape to an individual who sold it at auction for $38,000 in 2008.

It features a clearly intoxicated Lennon singing the song "Just Because" by Lloyd Price with his own improvised, risque lyrics (presumably recorded during the "lost weekend" when he and Yoko Ono broke up).

Madonna's acoustic demo tape, 1979

Estimated market value: $6,400

Long before she became a household name, Madonna recorded this demo tape and handed it off to Alex Prokofieff, a bassist whose band she was auditioning for. Prokofieff passed it along to his girlfriend, and the wider public eventually learned about the tape via a 2009 review published in Record Collector Magazine.

The tape, which remains Madonna's earliest known recording, later sold for a whopping $6,400 at auction.

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AC/DC's "12 of the Best" proof, 1978

Estimated market value: $9,000

The Australian band planned to release a best-of-style album in 1978, but they canned the concept when one of the band members, Malcolm Young, expressed concerns about the release.

A rare proof copy of the cassette tape apparently sold on eBay for $9,000 in 2008, but the unofficial "12 of the Best" cassettes currently available on Discogs sell for closer to $350 on average.

David Bowie's "The Man Who Sold the World," 1971

Estimated market value: $368.42

The original United Kingdom version of Bowie's album features the "dress cover," or a cover photo of Bowie wearing an outfit that wasn't featured on the 1972 re-issue on the RCA label. The cassette version of the album is also slightly different from the vinyl version, with two of the songs in a different order.

While the median price for a used copy of the cassette is around $370 on Discogs, some have sold for as high as $460. (The only used version of the cassette listed on the site as of this writing has an asking price of $641.)

How can you tell if your '70s tape is worth anything?

Overplayed, worn-out tapes in bad condition probably won't be worth much, no matter how old or rare they are. In the world of collectibles, mint-condition valuables tend to be worth more than used, damaged, or opened goods. If you find a '70s tape in its original sealed packaging, don't open it. Its worth could go down if you remove the original shrink wrap.

But as you can tell from the rarities listed in this article, even tapes in their original packaging might not be worth much if they were mass-produced. Demos and B-sides are usually rarer than full albums, but the most valuable cassettes are one-offs like those we described above.

Tapes with just a handful of copies, such as promo copies of Prince's never-released Black album or the sampler tape released by Xero (the band that eventually became Linkin Park), tend to be the most valuable, and you're unlikely to stumble upon those.

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Bottom line

For most people, most of the time, old cassette tapes, even super rare ones, won't make or break anyone's personal fortune. Still, it's always nice to make money from home, even if you're selling cassettes for $2 to $50 apiece.

And if you don't have any old tapes of your own, take your keen eye to the nearest thrift store: now that you know what to look for, you could have greater luck spotting a rare, valuable tape that someone else considered junk.

FAQs

Does a cassette's original release date tell me when my copy was made?

Not necessarily. An album released in the 1970s may have later cassette editions. Check the label, catalog number, artwork, and track listing against the specific release before assuming your copy is an original edition.

Should I clean a damaged cassette before selling it?

Avoid trying to clean the magnetic tape yourself. The Library of Congress recommends leaving magnetic-tape cleaning to a preservation specialist. Disclose visible damage to buyers, and seek professional guidance if the recording appears rare or irreplaceable.

Where can I sell old cassette tapes?

You can sell old cassette tapes on Discogs or eBay. Discogs lets you match your tape to a specific release and check previous sales, while eBay has listings for both individual tapes and bulk collections. You can also ask local record stores whether they buy used cassettes or sell them at a garage sale. Before listing online, compare completed sales, account for fees and shipping costs, and clearly describe the tape's condition and whether you've tested it.

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