Kyoto's spont on in my book (punny) as far as used boko stores. If oyu've got them, check them first. You can probably find what you're looking for on Amazon, but you'll usually pay the same price (or more) in shipping as you did for the book. If you find an old SR novel on there (and you will) it'll be in a used book store. If you get more than one, they'll likely be from more than one store. The prices for those books are pretty good, so you could end up paying $2 for a book, and $4 for shipping, for each book.
Do a search on here for other book suggestions, because the question comes up a lot, and people have made many helpful suggestions.
Most common suggestions, and I tend to agree wtih them, are :
Anything by Nigel Findley, especially
2XS Burning Bright ,which is different form the Burning Time. The first involves Bug City, the second in by Steve Kenson which goes over 2061, his character Talon, and has a tiny little piece about the spirit of Ghostwalker reappearing and some Shedim stuff.
Headhunters- has Jack Skater's team, which is a cool team
Psychotrope - some people like it, some don't, but it has an interesting, and recurring cast of characters that come up later in SR SBs, and it goes over the events of the Seattle blackout in 2060. Also takes palce almost entirely in the matrix, so good for that sort of stuff.
Technobable - mre matrix, but deals with the otaku, and the arcology a bit
A number of people also like
Wolf and Raven which is a series of short stories about a robin hood type runner named Wolf, by Michael Stackpole. If you like his writing style, which I do (or did at least, been a while), pick it up. Also has interesting characters, and some interesting ideas for your less than standard runs.
Oh yeah, beyond just old novels, I also recommend JM Hardy's
Drops of Corruption. Unique main character for one, good low life type game, and also has the very subtle drop bear reference.