The cheapest starts at $1,651 — Toto's All In 1978-2018 — but the winner went to Coil - Live Box at $5,075.
The cassettes attract a higher value because slower sales drive production and supply down, which makes some of them "phenomenally rare".
"The vast majority of cassettes do not hit these prices though and they are often more affordable than vinyl equivalents, making them appealing to many physical media enthusiasts," Discogs says.
Just 1.8 per cent of all Discogs purchases last year were a cassette tape, which was up slightly from the year before.
About 200,000 cassettes were bought on Discogs in 2018, which was an increase of 24 per cent.
More than a third of the expensive cassettes were sold in 2017 and 2018, with 2019 sales pacing slightly higher than those in 2018.
"Signs are pointing to a strong high-end cassette market, much like the trends we have noted in the vinyl market," the company says.
The most expensive cassette sold on the Discogs site. Photo / Supplied
"Cassettes are trendy now too. For many younger folk, they are a trinket to express ironic love of long-forgotten retro culture."
As for CDs, Discogs says their high-end market is also accelerating.
If 2019 sales continue at the pace they notched in the first four months, sales this year will account for 48 per cent of the top 100.
