[DubaiSis]

Colonies want members from all 4 years, so as a junior, this would be a pretty good opportunity for you. As far as cost/benefit analysis, you'll have to do this on your own, but sorority membership and colony membership in particular can be extremely rewarding. But it's pretty hard to quantify in terms of dollars and cents. Will it get you a job, a scholarship or something else that can be boiled down to money? It's possible but I wouldn't expect it. Will it help you make friends at your new school, develop leadership skills, hone your social skills and make you generally happy, if very very busy (all of which WILL help in that future job search, in one way or another)? Yes, it will do all of that.

Go through the colony recruitment process. There are no guarantees you'd get accepted, and you are not obliged to accept if they DO offer it to you, so there's no harm in at least looking into it. It's like a job search. They may not offer you the job and you might not want it, but you should still take up every interview opportunity you can get. If nothing else it gives you interviewing experience and will provide you insight as to what you want for yourself and what it's worth to you.