I have an offer for MSc Finance and I'll be taking it up. I don't have a lot of information about your course in particular but from all the research I've done, WBS is a really strong brand name.
If you want to pursue masters, now is the time. Even though a lot of colleges don't have a strict policy regarding work experience, 0-1 years is the most preferred range. If you cross 2 years, you will generally be advised to work for another year and try for an MBA.
As for the cost, WBS is pretty expensive, specially if you haven't been able to secure a scholarship, but I think the pay off is really good and considering the quality of the course, the brand name and the excellent career services, I think it is worth the expense.