Is the yellow letter worth it??

[Derek Smith]

OK, I know using yellow letters is a proven good thing. But with my budget I can only afford to send out 100 per month to start (have to pay for my 100 bandit signs too). Ron Legrand said that if you cannot sent out at least 200 per week you will not see results. Well I get paid once per month and I cannot afford more right now so is 100 per month a waste of time or should I do what I can. I appreciate your advice.