Beat The GMAT a GMAT & MBA community

I wrote the Gmat on march 17th 2012...my score was a 500...

I did study for about a month, but not intensely, i only took 1 practice test and scored a 520... i thought thats all i need. well it turns out most mba schools in Canada ontario require minimum 550.
i do believe that if i spend another month studying, and doing maybe 3 -4 practice tests. i could easily obtain a score closer to 600....but i am strapped for cash, and believe that an MBA in general is a great thing to have on my title, whether its from a top University or a somewhat OK one...

MY main problem that i am having is, weather to write again, or go ahead and apply to schools in canada

i would Really appreciate any help finding out what schools in canada offer ONLINE mba, and require lets say a minimum of 450....

i am interested in Wyane state University in Michigan......but i have not heard alot about this school...is this a good school???

In general my questions are:

1) Is there any schools that have online mbas( they do not need to be in Canada) that have a good reputation and a Gmat requirement that is less then 470?

2) weather or not i should write again, and see if i score more then 550...