Machine is sensitive to fluctuating electric source-needs it‘s own circuit during operation.
Paid about $110 from Sweet Maria‘s. Have noticed a significant amount of variation in roast times caused by changes in ambient temperature. In the winter typical ambient temp is about 40 degrees-takes a 6.5 or 7 on the dial to get thru first crack. At 70 degrees and above, got to crank down roast dial to 4.5. Winter roasting seems to result in brighter and more subtle flavors. Suspect faster roasting eliminates more subtle flavors. Bought this after many attempts to buy "fresh roasted" beans and getting drek. If you like your coffee-buy this and roast your own. Also have a WB Poppery II-it has the capability of roasting beans, but it is much more difficult to control-but cheap mine cost $2.