I agree on the price differences in S.A. It's amazing. If your going there, shop around. I've been there, done that, and won't go back.
Mark:
Your prices are about average for Namibia I think.
I can do the same hunt you advertise, except for the cat, for $3130. (This is 2005 prices, slightly higher this year.)
2X1 $200
Kudu $750
Gemsbok $420
Duiker $200
Hog $360
Cat ?
Baboon Free
Jackal Free
Birds Free
Beer Free
I would guess with the increase in prices, you could do this hunt in 2007 for $3500.
This is the hunt my son and I went on. We shot 10 animals and 4 made Rowland Ward. Kudu, Hartebeest, Springbok and Duiker.
The PH/Owner has been guiding Europeans for years. He's a local guy. Born and raised in the area. That's one of my few requirements. I won't go to Africa and hunt with some guy from California or Washington.
Here's a few of his other prices.
Eland $1450
Giraffe $850
Hartsman's Zebra $550
Burchells Zebra $550

Not trying to rain on your parade, just supplying info.
By the way, I'm not an Outfitter and have no monetary interest in this outfit.