A relatively simple break without touchup, I will typically charge around $120 for. With touchup varies a bit more, but typically fall in the $240-$320 range.
http://www.collinsluthiery.com/Price_List_2007.pdfThe singular act of regluing the break itself may take less than an hour, but from pulling the strings, tuners, truss rod cover, dry clamping and various prep work, to cleaning it up, reassembling, restringing, perhaps some tiny adjustments, billing and customer time, an hour and a half billing time is a good starting point I would say. Occasionally I may do a cheap Epiphone super quick fix for a student for an hour's labor, but even as jigged up as I am for this it can be still tough to fit every last bit in to under an hour. Minutes always seem to add up faster than you think, and 60 is not a lot of minutes.