Depends what you're buying...
Computers and electronics generally are much cheaper.
Take the Macintosh LC520 (also known as the Performa 520) as an example - it had a Motorola 68030 processor with an optional 68882 co-processor, 4MB RAM, a 640 x 480 pixel display and cost USD2000.
By 2021 an equivalent machine might be the M1 iMac with the ARM M1 processor, 8GB RAM, 4480 x2520 pixel display costing £1249.
Cars are another product whose real cost has reduced over the past 30 years.
However, in 1993 I bought a 3 bed house in Doncaster for £23,000. How much would that be now? I'd be surprised to get much change out of £600,000.