Melissa Data Question

[Eric NA]

I'm playing around with Melissa data trying to pull in an absentee owner list. I'm hesitant to make a purchase because when I'm putting in my constraints for the list, the "Records count" is updating with what appears to be a random number.

For example, if I tell it to show me ALL for corporate owners it will say 1,000 but then I switch it to ONLY corporate owners and it shows 250 but then I say NO corporate owners and it goes back to 1,000. I won't give 15 examples but I have had similar results for a number of constraints. Naturally I'm hesitant to purchase now.

Does this simply mean melissa data doesn't have data for some of the constraints I'm changing?