Roland RE-150 For Sale. This unit was fully refurbished and future-proofed, sparing no expense, by professionals with tons of experience rebuilding Roland echoes right (us). This process took 11 hours. As a result, it's not only working better and sounding better than all the lower priced units on the market, but will hopefully last longer too. This time consuming and costly work is reflected in its higher than usual price. You get what you pay for.