Glad you got it fixed. What you could have done (and it probably would have been nice to know this before) to drive it without hurting anything was to disconnect the line coming off the intake going to the solenoid and plugged both ends. This would have at least engaged the hubs, but not put you in 4WD. But that is all behind you. The service bill doesnt look too bad. But just for a perspective i did it myself, and keep in mind i have all the tools and lots of mechanical experience, but never did one of these before. I did both sides the first time in under three hours. When i had to re-replace the one side a month ago, i had the whole side tore apart old part out, new part in, all back together in under an hour. So imagine how long it should have taken the techs to do it with a lift and all the "right" tools. probably at the most 2 hours, but thats water under the bridge. Hope the truck works for ya for a long time.