Let's get the ball rolling indeed, as suggested by @Spacefruit and @ulackfocus and @watchknut from this thread: Around $100USD each as part of a trade...
A 34mm Clebar in near mint condition, a serviced ETA 2472 (+4 to +6 seconds per day, 278* amplitude and a 0.5ms beat error on my timegrapher) with a nice ostrich leg band for $112 delivered on January 3.
This one for exact EUR 200 Not a clue really about authenticity and all, but a nice piece that wears nicely on the wrist. Gold plated or rolled or filled. And this Longines: more or less the same, heavy patina, but, wow, character..... Bought it for approx EUR 95 18K As well as this Belca: think I got it for free, but for the sake of the argument, let's just say EUR 50 Gold plated: 10 microns or less...
Chronograph potential here, in the UK. http://www.ebay.com/itm/Vintage-Air...Silverstone-Project-Non-Running-/201776422174Purchases made through these links may earn this site a commission from the eBay Partner Network Slightly over $500 limit at BIN (and will need a service), but Best Offer available. Please remove my temptation
Fantastic thread idea by the way, thanks to @watchknut for suggesting broadening @Spacefruit's Omega thread.