I think Dawn is right, or at least, that it's an argument seriously worth considering. Moving is hella hella expensive, and if you're happy where you are: consider the cost of moving (and the cost to your mental health) vs. the actual change in rent. If you're really sure that that monthly amount is significant, think about the ways in which you might be able to make up the difference: maybe freelancing? cutting back on something?

I also want you to know that a lot of us are thinking about you and sending you all the good karma at our disposal. Heaps and heaps!