Determining # of residency apps

So, as an IMG i have heard many classmates and colleagues state they applied to several HUNDRED residency spots. I assume they were exaggerating, but some seemed dead serious. My calculations, this would be more expensive then the tuition payments! How would one determine a reasonable amount of applications if concentrating on non-competitive spots (low step 1 score)? Whats the best advice if not a lot of funds to work with?
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums