I don't think it's 'conscience' that makes people decide for or against Saudi.
Barf - what I'd say is that you just have to decide how important the money is. If it matters to you enough to essentially put your life in storage for ten months then go for it.
I think Jimbo's point is crucial - you need to go to Saudi with a goal of what to do with your money. It doesn't matter if that plan is to buy a house / go to work in S. America, whatever. It makes things so much easier than just going 'because the cash will be handy'. It's people without a plan that tend to fall by the wayside.
That accomodation looks a bit grim, but if you can grit your teeth for ten months and you've calculated how much money it will be worth and that sum appeals then why not give it a try.
At the worst you'll emerge ten months later knowing that you'll never go near the place ever again and that relative poverty in Thailand (or wherever) aint so bad after all. And you'll have your modest but reassuring bundle of cash.