Guessing the exact amount of a Price is Right showcase is difficult. Use a combination of known prices for some items and good rules of thumb to estimate the price of others and mix in a little luck that put the last few digits in place and you may just be able to guess it correctly. It may not be likely but we can imagine we could do it.
The one letter Wheel of Fortune solve is another matter. Guess a phrase with just a single letter? I don't know how to do it. Even more amazing, as Chris Jones (who wrote the article about the Price is Right) relates in his article Was the Wheel of Fortune One-Letter Solve Really a Miracle?, it turns out that Caitlin Burke didn't even need that single letter.
She knew the solution before she spun the wheel. In fact she was worried the contestant spinning before her would solve it first.
Myself... I'm going back to something simple and easy that is completely built on chance like Deal or No Deal.