Fusion and progressive guitar junkies probably already have these albums, but they're now in a 12 disc box.
https://www.burningshed.com/store/jazz/product/140/8565/
https://www.amazon.com/Man-Who-Changed-Guitar-Forever/dp/B01N5P4DLD/ref=sr_1_1?s=music&ie=UTF8&qid=1489087365&sr=1-1&keywords=allan+holdsworth+box
Best price - importcds
http://www.importcds.com/search?q=allan+holdsworth&mod=AP