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 XLT 6.0 PowerStroke Diesel 4X4: SRL Custom Tune Atlas 40 FICM Rotella 0W40 DASHBOSS Ford VCM II IDS Custom Y-Pipe Fabrication