According to Mercat Press:-

"The Greig-Duncan Folk Song Collection Volume 8   
Edited by P. Shuldam Shaw, E. B. Lyle and Katherine Campbell

722pages hardback ISBN:1841830127   
list price: £35.00 online price: £26.25

    The largest and most important manuscript collection of Scottish ballads and folk songs is now available in its entirety. Volume 8 contains songs of parting and children's songs, as well as general indexes and commentaries on the whole collection. The entire set of eight volumes is now available at the special price of £225.00."

Is this information on their website (about the entire set being still available) out of date?

Matthew