For 2nd-hand books I usually use abebooks, and have had no problems with payment or prompt deliveries from overseas:

www.abebooks.com/servlet/SearchResults?an=kermode&sts=t&tn=Annals+of+Kirk+Christ+Lezayre&x=55&y=13

Also:
Legends of a Lifetime, Aspects of Manx Life. Quayle, George E.

www.abebooks.com/servlet/BookDetailsPL?bi=1026588260&searchurl=bi%3D0%26bx%3Doff%26ds%3D30%26kn%3DLezayre%26sortby%3D2%26sts%3Dt%26x%3D45%26y%3D9

Sue