Hi Sol,
For comparison, I had my electrician add a 60 amp 220V breaker to my main panel, rearrange some other circuits in the panel to make room, added a 110V outlet at the panel (for xmas lights, etc), run about 25-30 feet of EMT conduit outside the house to a spa subpanel/service disconnect (he provided subpanel) and then trench a further 15 or so feet of underground rated conduit (the plastic-type stuff) to the tub location. This also includes all the necessary 4 or 6 gauge wire required by code.
In Northern California, this ran me $1060 or so. I had a couple other bids that went as high as $1300+.
As mentioned by UTS above, you might be able to do things differently depending on where your spa will be located. Get several bids and see what you come up with.