Looks like the bargains have almost disappeared now. Prices for studio machines i.e. Studer, Sony APR, Telefunken, Otari etc have firmed considerably in the last 2 years. Whereas you could have bought a decent Sony APR 5000 machine for £500-800 then, you would be looking at £2k plus now. Same for Studer A807s which have almost doubled in asking price in this time.

I suspect that interest has been revived enough to increase demand. With only a limited supply of machines (most were put in skips in the 80s and 90s as studios went digital), it is just the old fashioned law of supply and demand.