In 1978 the average price of a vinyl album was $7.32. Adjusted for inflation, that's $30.18 in today's dollars and much more than in 2021.
Billboard Top Hits 1978 (1991, Cassette) - Discogs
Toronto Sun article - Huge price increases coming for vinyl
Printed OOH
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Ridiculous Vinyl Record Prices! Give Me A Break!!!
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An unauthorized reissue of the 1957 doo wop LP They Sing, They Swing by the Del Vikings, pressed on multicolored vinyl.
Del Vikings - They Sing, They Swing reissue multicolor vinyl LP