Average price is $400. Australia sells camels (I'm assuming wild herds captured) for $1-1.5k per head.
https://www.mla.com.au/research-and-development/search-rd-re...
Presumably a camel that anyone wants to ride has been raised and trained properly. That camel is ever going to be ridden, then putting down $400 for a warm body is only the beginning of the investment.
I assume it's mostly meat but have read elsewhere Australia camels are often used for breeding vigour.
On the training. I know more about horses. Where I live in Australia a typical untrained horse will go for about $2-4k and trained it will go from $3k to $10k. Obviously add zeros for special breeds or quality genetics. I cant see camels being too different in ratio of untrained to trained value, even a lower ratio given cheaper labour costs in ME.
Camels have a reputation (I'm not sure to what extent it's deserved) of being somewhat more obstreperous; nonetheless, I have a hard time extrapolating to 50K, were camels in a like position to horses in the U.S. Not for a "decent" camel.
In current Saudi Arabia, sure, maybe. But current Saudi Arabia is not what's being talked about, as being "down the line".
P.S. Just don't hook my friend's horse up to a cart or sleigh or the like. She was never trained for that, and at this point, she's not having any of it. She also doesn't think much of jumping; smart horse, her joints will last longer.
I have a friend down under (to the right of Oz) who has the former and has some knowledge of the latter. I seem to recall her confirming this, when I mentioned it.