F/T is TOTALLY worth it. If you keep a number of snakes, buying live feeders is just a LOT more expensive--which means, if you're going to save your bank book, you would have to raise your own. Which costs about the same as using F/T, but is incredibly more laborious and stinky.

Plus, freezing kills parasites, reducing the risk of your snakes picking something up from the feeders (which happens more regularly than you might think). F/T rodents don't bite or scratch (eventually any snake can grab a rodent wrong, and receive an unpleasant bite).