Look out, Samsung. Piper Jaffray analyst Gene Munster says Apple (AAPL 0.57%) could sell 75 million lower cost iPhones in 2014 after introducing a $300 unsubsidized handset this fall, according to CNET News.com.

For Munster, it's a stretch of a prediction, but not an altogether unreasonable one, says Tim Beyers of Motley Fool Rule Breakers and Motley Fool Supernova in the following interview with The Motley Fool's Erin Miller. Most of Apple's competitors are using Google's (GOOGL 1.37%) zero-cost Android OS as a pricing weapon. Why shouldn't the iEmpire respond?

Tim also tells Erin to expect Microsoft (MSFT 1.47%) and Nokia (NOK -0.95%) to cut prices on Windows Phone handsets, putting further pressure on Apple to fulfill Munster's prediction. Either way, Tim says Apple stock needs a catalyst -- and soon.

Do you believe a cheap iPhone would boost Apple's prospects? What about the rest of the industry? Please watch this short video to get Tim's full take, and then leave a comment to let us know whether you'd buy, sell, or short Apple stock now, and why.