From an article in the Telegraph:
A team of 80 lexicographers has been working on the third edition of the OED – known as OED3 – for the past 21 years.
The dictionary’s owner, Oxford University Press (OUP), said the impact of the internet means OED3 will probably appear only in electronic form.
The most recent OED has existed online for more than a decade, where it receives two million hits a month from subscribers who pay an annual fee of £240.
“The print dictionary market is just disappearing, it is falling away by tens of per cent a year,” Nigel Portwood, the chief executive of OUP, told the Sunday Times. Asked if he thought the third edition would be printed, he said: “I don’t think so.”
Almost one third of a million entries were contained in the second version of the OED, published in 1989 across 20 volumes.
The next full edition is still estimated to be more than a decade away from completion; only 28 per cent has been finished to date
Checking with Amazon, the current 20 volume OED set, with CD ROM, is selling for $1,290.
Thanks to Frank Sleightholme for the link.