Direct Mail Budgeting - Help!

[James Gilpin]

Hi All, I am looking at potentially doubling up on my marketing but want to hear some feedback in regards to budget. My plan is to direct mail (yellow letter) landlords in my area with the proposal of a long term lease (master lease) or to buy as-is for cash. I have 800 properties to begin with which I plan to mail every month for 6 months. This coming out at $4,272 through yellowletter.com My question, is this too much or too little? I have a decent amount of savings but can't afford to just blow $4,500 with no return. Does anyone have any experience with master leases or offering multiple options in one mail campaign? Thanks all!