Melissadata "One-Time Rential Use Only"??????

[Benjamin Barredo]

I just bought a list off of Melissadata and it has a message that says "one-time rental use only".

What does that mean, exactly?

Also, I noticed that on listsource I had one list of 2,000 people for like $400, a list for a 1,000 at just a little less, than a list for 600 for only $104. Why such the drastic difference? It wouldn't accept my credit card, anyway so I went with Melissadata. A much larger list than I wanted but it at least accepted my card.

As always, thanks for your help.