I have a set of those mirrors. $310 would be a fantastic value!
For those asking they have the ability to:
Upper/Lower heated mirror
Turn signal/marker light
Swappable upper cap with included chrome or PTM cap
The only thing they do not do is power fold or extend.
2006 F250 SCSB XLT 6.0 PowerStroke Diesel 4X4: Gearhead Quicktricks Tuning Atlas 40 FICM Rotella 0W40 Rotella ELC Mechman 240 DASHBOSS Ford VCM II IDS Custom Y-Pipe Fabrication