Okay...now to the real meat? What do I look for? what is worth finding? what is worth obtaining for resale, collecting, whatever. Any of the vintage shoes are worth having. Of course, wearable and of course as usually, size 7 and above is more desirable as far as ladies shoes, but really, if they are in excellent condition, even the small sizes are well worth it. You can stll find many examples of the shoes in excellent to mint condition for the simple fact is we are talking about 30 years ago at the oldest with some of these shoes, that they haven't experienced 50 years of improper storage yet, and they will have held up better anyways than other "comfort" shoes like the Birkenstock. With that cork like footbed Birkenstocks tend to develop that very prominent dark foot impression of the wearer and are very difficult to consider for posterity as they really mold to that individuals foot. They were also not inexpensive at the time so if you bought them you probably took care of your shoes, or had the cash to not have to wear them into the absolute ground before you replaced them. As far as modern shoes, they also have a strong following. Regular retail prices range between $60-130 range, so very comparitively priced to compete with Birkenstock, and other similar counterparts. Of course, Famolare still makes loafers and fuller clogs that some of what Birkenstock offers, but the sandals are competitively priced with the more widely well known Birkenstock.