Looking at everyone's responses here, there seem to be too many variables at hand to set up a standard quoting system.
In my opinion, a hunting day is a hunting day. You will pay for that. If you arrive in camp at 15:00 after a long drive/travel day/flights from wherever you came from then that day will not be charged. Especially if the outfitter is charging for the transport. Again, if this is a 1.5hr trip, then forgo charging the transport, if this is a 6hr+ trip, charge a fee that will cover the trip and treat the client to a decent meal en route or before hand etc.
This is my opinion (which is often not very useful... ) and based on here in Zambia where you can be charged between $600 and $1200 for day rates quite easily.
RSA may be different where the day rates are quite a bit lower and the outfitter may be playing with charges everywhere to ensure he keeps in the black.
This also works to keep the initial offer low which attracts interest.
For example, if i quote you a hunt in zambia for 14 days and say you are all in at $14k, your only other costs is trophy fees and taxidermy, but elsewhere you are quoted day rates of $8,4k, transfers $500 each way, dip pack $1.5k, rifle permits $150, ammo taxes $2/rd, conservation fee $20/day, concession fees $2.5k, accoms before/after hunt for a night if needed... you can see the second option looks way more attractive, yet once added up they are not much different. and the first option is a one time payment, some days the outfitter wins because you may not require accoms the night before transfer to the camp, other days he loses because you came in with 3 rifles and 150 rounds of ammo and he will cover all these costs rather than the client...
Different strokes for different folks...
My point here is not to write off what appears more expensive at first glance, there may be a lot more involved than you initially see.
Even the higher value options are worth looking into.