be honest with your brother. my bro's mrs is a nightmare too and she's the reason he doesn't come to visit from scotland. he dragged her along to say bye to my sister the other day before she went to Oz and he told my sister that he had to practically drag her down here. She made is VERY obvious she didn't want to be here. i think normally he just likes a quiet life so we don't see much of him (and its harder when they have kids together) but he knew he wasn't gonna see my sister for years so he put his foot down. your brother is probably the same, anything for a quiet life, so just explain to him that you feel sad you are growing apart but you really can't afford to come over. then get a webcam/skype thingy. if things are still strained after that, then i dunno what else you can do.