List Source?

[Gary McKissick]

I am new to investing and ready to jump into my direct mail campaign.  I have very limited capitol so trying to find any ways to cut costs.  When I go to purchase the list it shows in detail what everything costs.  My question is what is the "Appended Output Fields/Standard Mortgage Leads" entail compared to the criteria stuff?  I can remove the "standard mortgage leads" so I'm curious if you need it or not.  It cut the list costs in half which is something that'll be beneficial if I am going to spend 500-1k over the next 6 months doing this campaign. 

Picture of what I am talking about