I can't start it. The quest marker's there but the bookie's not there to talk to, just one horse and a few fans. It's a pretty common issue by the looks of it. OT3's open by the way.
There is a vendor in Novigrad that pays ridiculously HIGH prices for every item (he busy everything) but never has more than 120-150 (roughly) gold... it's such a tease.
LOL. I'm also way earlier on than i should be. Not due to lack of interest at all, loving my time, but about 60+ hours used just finishing sidequests on the map. Life is getting in the way of my destroying it.