People seem to assume that single speed means brutal gear ratios. We are not talking about Olympic track events here but rather a nice easy gear to spin up hills or cruise on the flats, coast everywhere else.
A Wabi Special is $995. It has option for a straight handlebar instead of drops. Fits a nice comfy 32 mm tire. 18.5 lb.
Put 46/18 or lower gearing on it and go just about anywhere.
-Tim-