This is the 10.- USD dev kit for 5LP I spoke of earlier. P&P comes in addition, but I will encourage people to get one of these to play around with because it is not a “normal” ARM MCU. It actually contain two MCU’s as Cypress also add a programer at right. This can be broken loose and used independently. You obviously need a USB cable extender , but those cost 1-2.-USB on ebay.
This fits on a bread- or vero- Board making it easy to test out concepts.