Woody and I have both bought it here. I have gone to 6 or 8 different places and purchased.
Which brings me to a point. You can correct the Ibox with the following info:
The Texaco Food Mart in Pflugerville is actually a Citgo. That is the main place that I buy Koma as it is on the access road of I-35.
The RC Mart in Round Rock does not exist. The address given is a house in the middle of a neighborhood. There is an RC Mart near the UT campus in Austin but it does not carry Koma as I went by there.