Don't forget about your local beekeeping clubs. I know there are some extremely strong beekeeping groups in Texas. In our technology dependant world now days people seem to forget or choose not to interact in person.
Look up your local group. Suppliers often order extra packages to fill an order or a Beekeeper might order extra packages because he has a borderline hive. Either way both will have extra packages if your lucky. If not its a good way to find someone with nucs for sale.
Most beekeeping clubs have programs and/or beekeepers focused on helping new beekeepers. As IABeeMan said, many times members place orders "just in case" and have extra. Other times, a member may be willing to make a split just to help a newbee. The Internet is a great source of beekeeping info, but nothing beats having a couple local mentors.