This is a limited edition watch, right? Condition looked brand new, even the rear case sticker was still there (although I thought that the Breitling rear sticker was a clear one with no red line). I would check very carefully. You need to ask yourself :
1) How is the price like? (too low to be true?);
2) If this was a brand new collector's item, then how come the LE box was not there? (even if it was placed in the winder over time, there should be some marks on the rubber strap too).
In the pre-owned market, you would buy the seller first, not the watch. Ask for his business card and check on the authenticity. Or spend some monies for the AD's verification. When in doubt, walk away. Do tell how this goes.