What's the historical reason it wasn't included in one of the other states?
When Texas sought to enter the Union in 1845 as a slave state, federal law in the United States, based on the Missouri Compromise, prohibited slavery north of 36°30' parallel north. Under the Compromise of 1850, Texas surrendered its lands north of 36°30' latitude.
They can be. I bought a Galaxy s22 with a broken screen for $150, and my carrier just gave me an $1100 credit for it on a new iphone. I don't need an iPhone, and I will be selling it to get yet another cheap phone and pocketing the money, but it goes to show just how much phones do not cost to the people producing them