Loan sharks are Known to be cheaper than some payday lenders in Missouri.
Missouri allows short term loans(14-31 days) under (Mo. Rev. Stat. §§ 408.500) According to the Missouri department of finance a 75 percent cap on interest and fees on the initial loan and interest can apply daily and must be posted. This means a loan of $100, if not paid back the next day, will cost you $75 just in fees and interest!!! This cap was only placed a few years ago and a measure to limit it at 39% was not even allowed to ballot. Usury Laws used to protect consumers from this. The Uniform Small Loan Law capped interest rates at 36%. http://scholarship.law.duke.edu/cgi/viewcontent.cgi?article=2062&context=lcp
So in short, avoid payday loans and loan sharks for that matter, save your money and your legs.