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I tried this and it worked as promised.  They cost me £13.10 via Paypal.  I don’t feel badly about it, because I don’t intend reading all of them, or even all of some of them, but it’s nice to have them there.  In truth, a quick look suggests many are a bit above my head.  They will join the going list of books stacked up to be read ‘one day’, except they’re not slipped in horizontally above the existing books on my already bulging bookshelves but slipped away onto the ‘n’ tetrabyte spare hard disc my son persuaded me to install on my PC.  DaveP