Not sure about TX, but here in the southeast, campgrounds are fairly spendy. You won't touch a state park for under $30 and private campgrounds tend be even more expensive. In some parts of FL, GA and NC, it's cheaper to get a motel room. I have had great luck with wild camping and only been asked to leave land twice. Once by a cop and the other, by a farmer. My fault as I wasn't stealth enough. The cop was none too friendly. His only response to my attempt at talking to him was to tell me to "Get your shit and get out of here.". The farmer asked what I was doing on his property. I apologized for trespassing , proceeded to tell him about my trip and then showed him pictures. I offered him the little cash I had on me if he'd let me stay, as I'd already setup camp. He told me to keep the money but be gone with the sun in the a.m. The following morning I was up before daybreak and began to breakdown camp. Guess who rolled up at sunrise ? He thanked me for keeping my word and invited me to his home for breakfast. In my experience, most land owners aren't assholes that want to be violent towards travelers.