I have been very, very fortunate to run into this on a couple of occasions. Its how I got my first real anvil, post vise, coal forge, and a whole selection of hammers, punches, etc. not to mention some stock.
When first starting out, I was getting frustrated trying to find all of the 'stuff', and was saving up to buy new, when fate put two older smiths in my path, who were selling out. One was a hobbiest, downsizing; the other a professional who was retiring. In both cases, they wanted the majority of their tools to go to people who would use and appreciate them. They purposely posted ads on Kijiji, craigslist, etc. of things that would only be of interest to a smith (i.e. don't post an anvil for sale - as you'll get the antique dealers & tool collectors). When you arrive, they say "so what else do you need?". They charged prices that were somewhere between very fair, and bargan basement. And I can tell you, it was very much appreciated! The advice they gave while chatting was priceless, and the tools are all being put to good use.
Of course, you can never expect that - but those who are fair when selling off, really do inspire the next generation.