The Staton kit is on sale right now for $160 (throttle and cable, no motor). I'm looking for the Lehr kit. Sometimes it's on sale.
You can call Staton and see if he has the Lehr engines, and which kit to use with it.
The trimmers are about $100-150, and might be available as refurbished units through big dept. stores' service centers or big tool discounters and ag shops.
$137 shipped on Amazon here: http://homegardenoutdoors.com/produc...o-Trimmer.html