I have Truglow TFO (tritium & fiber optic) sights on my XD-40 service carry pistol, and I love them.
If you do a search you may find complaints of durability issues when they first came out - the fiber optic tubes dislodging from the sight - but I believe they have corrected that deficiency. I certainly haven't had any problems over the two years or so that I've carried mine.
The street price is considerably better than than in this link, so if SA can't be reasonable, there are other options:
XD-40 service, XD-9sc, member GeorgiaCarry.Org, National Rifle Association, Gun Owners of America, North American Hunting Club, Rocky Mountain Elk Foundation