Hey Girly! I live in Dallas and I bought both my Trek 1000 and my Specialized Tarmac (OK, boyfriend bought that one!) from Richardson Bike Mart.
Do not buy your bike online... buy it at RBM. You want to be fit on the bike after you buy it and you will need to take it in for the occasional tune-up. Sure, they will work on a bike not bought there, but some of those things are included in the price.
The Ruby is a nice bike. Do you like it? Have you compared the ride and fit to other bikes?
I guess the other question is this... can you easily afford a bike in that price range? If so, and the bike is the best one for you.. then go for it.
I love my Trek 1000, but the components... the Tiagra and Sorta shifters/derailer on it were a pain in the booty. I had to take it to the shop for minor adjustments all the time. Shoot, there was a point for 6 months I couldn't get in/out of the large chain ring. Shifting with those components was a pain.
My Specialized has all Ultegra... derailer, shifters, brakes, etc. I have yet to take it into the shop for an adjustment. Well, maybe once after the chain stretched some... but that's common. So, ONCE in a YEAR. With my Trek 1000, I was in the shop 4 times a month.
The 105 components are good too... so if you have the money... and you can afford it... DO NOT get a BIKE with anything LESS THAN 105's... 105's/Ultegra/DuraAce... all very good. Tiagra and Sorta are OK, but they aren't great.
Good luck and once you get up and riding... check out the Greater Dallas Bicyclists. They even do a newbie's ride on Sunday's. Great for somene who is just learning to ride on the road and in groups.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather, to skid in broadside thoroughly used-up, totally worn out, and loudly proclaiming: WOW WHAT A RIDE!!!!"