I'm a transplanted Texan and I wanted to make a few comments:
Several people have wondered about the ranch, where it is, what it's worth, and how he could afford taxes, etc. I cannot give exact figures here b/c I have not actually looked-up the deed but I can provide an informed answer. First of all, the ranch is not in Austin itself. For those not from Texas, we're not all a bunch of backward farmers. Cities like Austin, Dallas, Houston, etc. don't have ranches in them!! They have glass office buildings, airports, factories, freeways.....even Starbucks! Now, Austin is at the edge of an escarpment, with the Hill Country to the west and rolling plains to the east. I know the area pretty well and I can tell you this Ranch is not in the Hill Country. It looks very much like the area about an hour east of Austin - near LaGrange a Brenham, or even Gonzales further south. David is from Bellville which is 50mi west of Houston. I don't think it's that far east, but it makes sense for the ranch to be not too far away from home. I've looked at some land in the area and the ranch with 90 acres and house probably was around $500K-$750K. If it had been up in the Hill Country west of Austin you are talking more like $2-3 million for that amount of land.
As far as paying the taxes, etc. that will be easy. As long as he can make it a working ranch, he will get HUGE tax breaks from the government. Any knowledgable accountant will be able to make the numbers work for him.
Finally, back to something I alluded to in my first paragrapgh. One of the girls in an early episode (I think the other Swede, not Olinda) remarked that she imagined living in Texas in a "small village" and I think Olinda said she would never get to shop or get her Starbuck's. I'm sure that's the perception of Texas in Europe -- which is very odd since they all seem to watch Dallas, and the whole opening theme is nothing but shots of downtown -- anyway, I digress. It seems like a lot of people from all over the US think the same of Texas and I have to admit David didn't do us any favors. There is indeed a large rural population in Texas with ranches, farmers, and SOME cowboys with a Texas drawl. There's also a large rural pupulation in California and Illinios too, but that doens't mean people from LA and Chicago are backward. The fact is that 3/4 of Texans live in a major city that's just as modern and sophisticated as a major city on either coast. My point here is that if he had chosen Olinda, she'd be in heaven going to the Galleria (or any of the other 20 malls) in Houston or Dallas. If he had chosen Cat, the music scene in Austin is way ahead of most any other place in North America. And as for Linda - I'm not too sure what she's interested in but she won't be too far from Houston, Austin, or San Antonio to get her "city fix".
Anyway, just wanted to pass along the info. and I hope David and Linda are happy!