I probably have three copies of SNES Wario's Woods and three SNES Tetris 2. At least with Tetris 2, I got two manual variants I was able to scan for preservation (though I think I only scanned the pages with minor differences).
That reminds I also scanned the manuals for Y's V and Y's V Expert for the Super Famicom. Found out the only difference I believe was the cover. Definitely not worth it to buy a complete copy of Expert if you're into buying SFC RPGs.