People who use confession as a get-out-of-jail-free card

During the Middle Ages, the get-out-of-jail-free card was called an "indulgence".  To obtain an indulgence, one had to preform some redeeming act.  The indulgence was a written document which (I believe) could be transferred, which led to cash-for-sins.  In some cases, a church donation was the "redeeming act".

In effect, isn't that what Jimmy Swaggart offers?  Gimme one thousand dollars and God will repay you ten-fold.