As I mentioned all of the items on my web page are also listed here on the buy sell board if its easier for you. There is absolutely nothing wrong with informing you of trains available for sale via these boards. When I was first starting out and didn't know where to go to find old trains, tips from others was the best help I could get.
With that said, local shows and flea markets are more good places to find bargains, but you need to do your research first and know what to look for regarding the numbers your interested in buying, as well as a fair value for same on the forum, on the street, or anywhere else. For example if you like the 283 Pacific what should you look for when buying one. Broken pilot steps, broken pop valves, cracked motor mount posts, missing bell etc., are all things to watch for on those style loco's. Ask lots of questions until your confident with what you know. Many sellers will negotiate at shows so don't be afraid to ask for a few bucks off. Doug has a good selection as do other vendors you can find by doing a Google search. No matter who you buy from, do your homework first so you know what your buying and if the asking price was fair. I would avoid buying anything on line that does not have several clear well lit pictures of the actual item for sale. That, unfortunately, will eliminate many vendors you will find with a Google search. A price guide is essential as well, although with today's economy the values listed are a little outdated and a little higher on average than prices being realized.
Gandy