Omega makes an excellent watch.. but I'm assuming anything in the $200 range is vintage or fake. Buying vintage can be tricky and most serious collectors would advise against it without knowing a fair amount about watches. You may get the watch for $200, but it may need $1000 worth of work to make it run. It's difficult to tell these things from pictures.
For more modern watches in the sub-$500 range, I would look at Hamilton, Oris, Tissot, O&W, Archimede, Sinn or the Seiko automatic divers.. but there are numerous other options. I've seen Omega Seamaster Pro's in good shape go for $700 on timezone.com.
If you want something used, I would suggest spending some time on the sales forums at www.timezone.com
rather than watching ebay. Great deals can be had and the "collectors" that sell there take care of their watches. Buy the seller, not the watch.
Originally Posted by ms244
Not to hijack a topic, but could some of the more knowledgeble people out there recommend some tips for checking out a used mechanical watch and possibly some good watches to look for.
Browsing around on ebay, I see there are several Omega Geneve watches that can be had for under $200. Any thoughts on this item?