I'm not sure what Dioxine was trying to say, but by themselves those numbers are irrelevant. Sure it's cheaper to pay 3 Spanish months, but how much does a Spanish person make? It's only the cost relative to income that will tell you if it is more or less affordable. And even then, you'd have to compare that while taking into account how much more are other expenses. It might be cheaper, but if, say, oil is a lot more expensive in Spain, then you end up spending more fueling your car and even if it a smaller fraction of your income, it is a bigger stress on your budget.
BUT, most importantly, that's really not what should be discussed in a "TFTD MOD Better Aqunauts [sic]" thread, is it?