Prices are gonna vary due to a bunch of factors. You can give your LBS a shot at earning your business or you can try this online source. I've never done business with them, but I've seen favorable feedback here from time to time about them.
http://www.biketiresdirect.com/searc...lick-mtb-tires

Prices can vary widely from $20 for a set of two tires up to near $100 for a set.

I initially looked for tires on that BTD website, but ended up buying from my LBS. I went up there and told them what I was looking for, they showed me two different options - a 26x1.25 and 26x1.5 tire. I ended up going for the 1.5 tire.

Before that I actually went to a different LBS closer to my home, but that place was a dump, they acted like they didn't know what type of tire I was talking about, and then they said they would have to order something, which is why I chose to go to a LBS a little farther away, but they will forever have my business.

Before you get those 1.25 inch tires, you might want to check the chart below that I stole from Sheldon Brown's website.

http://i243.photobucket.com/albums/f...l/tire-rim.jpg

I believe that 1.25 inches is between a 32 and a 35 so you'll want to make sure that the interior width of your rim is 21mm or less. If the outside is an inch, you're probably good.

The other thing to consider is ride quality. You're going to feel the bumps more with 1.25" tire, especially on a 26" rim. You're going to have to be much more careful about keeping the air pressure up and you may have more issues with flats.

And in the end, the bike is still a hybrid/comfort bike. The performance gains you get by going with a narrower tire may not be what you hoped for.

You need to take the tire off the rim, or separate the bead and push it aside (and the tube) and measure the interior width between the rim walls to be sure what size tires you can use.

I believe I measured mine as 17mm (or 19 can't remember) and the bike had 2.1" knobby tires on there before my current tires.

That chart is perfect. I knew there had to be limits on what tires fit what rims just like with cars. I'll have to check out the interior width to be sure if a 1.25 tire would work. Thanks to everybody for your help.

This. At about 20 MPH, your chief obstacle is wind resistance, so putting skinny tires on a hybrid might just hurt the ride without giving you more speed.