Budsguns has them. 108 bucksI purchased them from James (ajamesp51): XDMAN.com . He's the poster in post #6 above. I hIghly recommend him. This will be my 3rd or 4th set of sights purchased from him, plus he's also refinished several of my slides.
He does great work, with a pretty quick turnaround time and good prices. Lots of folks on this forum use him.
These are the sights I ordered: ATRUGLO TFX XD Sights Green Front with Green Rear TG13XD1A
I also send you a PM with this info.