You can become a prime member for free just by being a mom/caretaker. It is time limited but when you make purchases you get extensions. I've had it free so far for over a year. I think I expire at 1 1/2 years. Its been awesome I have order tons of my swaying "stuff" supps, rephresh, OPK's, HPT's etc. etc. because if it qualifies as a prime item you get 2 days shipping FREE. I NEVER am out of anything you can wait till close to last minute to order if your not sure you need something and then do bc AF shows or something similar!! Prices are much better too, I almost fell over when I saw the price of digital OPKs in the drug store