So my question to you is, what format would you expect if you were to buy a collection of puzzles?  There’s no commitment to buy if you comment of course – I’m just trying to gauge what people would expect.  The options I have in mind are:

• Standard book format, with colour cover and available to print or order a printed copy of.  For example see the two books I put online at lulu a couple of months ago (click through to each title and you can flick through pages of a preview which will give you a good idea of what I mean – they are fully laid-out, ‘real’ books)
• A simple A4 or Letter-size book format, with one or two puzzles per page and no real page design other than puzzle and/or page numbers, available for online download only.
• A zip archive file with lots of separate PDF files, just as you might download individual PDF puzzles from this site.

Also I’m wondering what size of collection would interest you?  I’ve always tended to put 100 of a puzzle together before, but perhaps 50 would be a better quantity and then I could also create regular updates for popular packs with new puzzles every month or two, depending on demand?