I didn't know
I did wonder why you'd stopped at Vol. 26. I thought you were waiting for the library to get it in or something.
£130 on Amazon UK for Vol. 27, good lord. That's almost as bad as Berserk was before the reprint. Book pricing can get really silly at times. Although now I think of it, that's why I bought the rest of it when I did. I read somewhere there might be an omnibus edition coming out, and I thought that might mean the old edition wouldn't get reprinted.
On the bright side, looks like Vol. 27 will be available in an omnibus edition
eventually. On the down side - and after a wait of a few years - your editions/ spines won't match.