I'm not sure what kind of houses you have in mind that have nothing that can easily be transported and sold... Except for the furniture, most houses are full of stuff, and most of it can be sold.
From all the things listed, jewelry seems to be the most likely target.
50 bucks is a lot of money for some people.
Police say the ring of thieves averaged two burglaries per week and netted approximately $2 million over the past year.
...
Pentis says they found the suspects the same way the alleged thieves found their victims — through Facebook. “A lot of these are Facebook, MySpace, Instagram, where they’re bragging, showing gold and cash from their robberies, with their face,” the asst. sheriff said.
http://losangeles.cbslocal.com/2014/06/04/police-nab-alleged...
Crime organisations moved from drug dealing to organised burglary because the risk is much lower.
Not sure if they use Twitter and instagram to identify targets.
They steal anything that they think they can sell and convert to cash. iPods, phones, laptops. Also of course cash, credit cards and jewelry.
Which brings up another point. Burglary can be a dangerous business. I know if someone accidentally burgled my house while I was home it would not end well.