Last time I had one done, it took about 5 hours on a dyno. Depends on whether you can negotiate a flat rate for the job, or if the dyno operator will only charge by the hour. Think that last session cost about £125 + fish and chips for lunch.
i spoke to them about a map for akrapovic ducati air filters and a pc3 for which combination i could not find a suitable map. they e mailed me with an offer of a free map done at their factory if i took my bike in ,they would then use the map for future people to use aswell....