you could do it for that or less if you're doing the work yourself, but the labor is what will get you, a cam swap requires a decent amount of work and time getting to the internals of the engine, so removing the intake manifold/distributor/wiring/TB/everything else associated with that, valve covers, rockers, pushrods, lifters and retainer assembly, lowering the oil pan some, removing the timing cover and timing set, and finally the cam itself...then at the VERY least you still have to re-assemble everything, reset the timing, then you've got tuning and other things that will require immediate attention, so labor charge will be the majority of the cost on that.
personally I wouldn't run anything other than a stock cam on the stock valvesprings/retainers, even if it is under the lift limit. its VERY worth it to upgrade them while you're already in the engine that far anyways.
if you're just pretty much stock and looking for a little extra power but not wanting to deal with everything that is required for a cam swap, I'd probably say a custom tune from a reputable tuner would be your best bet, that'd run around $200-300 or so. then i'd say use the rest for a REALLY thorough tune up, I'm talking cap/rotor/plugs/wires/off engine TB cleaning/oil/all filters/coolant/braided brake lines/brake fluid/rotors/pads/shoes/high quality detailing/PCV/gear oil changes/tires/steak dinner....or as much of that kind of stuff that is due...if you already really keep up on your maintenance items, than I'd save the extra for the future cam swap, or supercharger or something that will really be a significant increase.