I have extra heater strips (but NO controller). One fits either a Meade or a Celestron 8" SCT; new price is $58 plus shipping and I'll sell it for $50 shipped CONUS. The other fits a C11 and sells new for $75 plus shipping; I'll sell that one for $65 shipped CONUS. You'll need either a Kendrick controller or a Dew Buster controller for these. Both have been very lightly used, just enough that I know they are both good. Take 'em both for $130 shipped! I accept paypal (no surcharge) or postal money order. Buyers with great feedback can send a check.