How much do your sims vacations generally cost?

This question is completely revealing the fact that despite having played the game for 20 years I stopped taking my sims on vacations not long after the expansion pack originally came out.

But I'm trying to break that habit and the Gavigans have met one of the criteria to trigger a vacation (they got a Genie lamp and have no need for the other wishes) but I'm wondering how much this is actually going to cost them.

And how much money a family needs to have for one of the other two criteria (top of their career and getting married) to be allowed to trigger a vacation (and when they're too poor for it).