WTB - Quarq 170 or 172.5 53/39

Who has a Quarq for sale with either 172.5 or 170 crankarms and a 53/39 chainring setup? GXP/Shimano bottom bracket fitment preferred but could make a BB30 work as I am using BB30-to-Shimano adaptors now. New or used in very good condition. Looking for a Slowtwitch deal under the Ebay prices. There is a new Quarq Sram GXP for $1000 right now. Can anyone beat that for a new one?

Rotor 3D crank, 172.5 with Quarq Cinqo 130bcd. New, never used. GXP. Great crankset: stiff, light, good looking. Without rings: $1100 shipped.

I have a SRAM Red 2013 53/39 170 mm arms up for grabs. I’ve ridden it this season but it’s in great shape - was purchased in Feb, and my team switched to Red22 this fall. I’d be willing to let it go for $1100. No problems and consistently calibrates at -300 or so.