@James Danchus
The start-up costs you cite appear low. That's the reason so many people jump on wholesaling when they are starting out.
So pretend you send out a bunch of marketing. Pretend you get a lot of responses. If you don't know how to figure out if they are a deal or not or what to do with them if they are, you have wasted your money. Do that too many times, and wholesaling isn't so cheap anymore.
I had a gal contact me about a year ago from CA. She had bought some marketing materials and some lists and sent out a bunch of postcards in my market. Her card generated a lot of responses, and she was really excited.
She had no idea what to do with them, so she called me to partner with her on them and help her work them. With the exception of one, every response she got was a "why bother". For example, taxes owed were more than the as-it-sits value; the owner was upside down on the property and way behind on payments; the property had been through foreclosure, but the bank didn't want it so the owner was still on title...and so was the lien that was way more than the current market value for the property; the owner was totally unrealistic on price and was belligerent about it...need I say more?
How do you avoid all that? Hire a good, reputable trainer with a proven track record that will drop into your market and set you up in business so that you are generating an income in 8 weeks or less. That's how I got started 13 years ago. I have made hundreds of thousands from what that on-site mentor did for me. Needless to say, well worth the money.