I don’t know this blog at all, but was intrigued with this post. A “proper” setup in the 1980s involved reverb machines and DATs and mixers and tape recorders, to the tune of £10,893 ($14,000USD). Assuming they didn’t adjust for inflation, that’s almost $30,000 in equipment in today’s money.
Through the magic of computers, they suggest you can get the equivalent today for just £1530 ($2000USD). There’s a little more to it than that — I wouldn’t want to edit sound on a several year old Mac that cost five hundred bucks, but mileage will vary. You can get an extremely well equipped Mac for $3-4000, putting the total still far below the $30,000 required in 1985.