You clocked that up quick. Sounds like your enjoying it all though
First service is usualy an oil & filter change, a check over to tighten bolts, inspect the brakes, throttle cable play etc...
Apart from the oil and filter change they will just check and inspect the bike to make sure everything is okay with it.
Price seems to vary from place to place. I've heard it costing up to $400

. Mine was free (friends with Suzuki though

)
If you've been told $190 it's a fair price and roughly what the normal service cost should be.