I do not think Premiumdrops is worth the subscription fees. I decided to subscribe for a month and the site is still full of problems.
For the last 5 days there is no Drop Lists. Todays list contains only 12,000 domains... I am not getting what I paid for and the site has become useless to me. Many features do not work including Google term popularity etc...
I would wait until they improve their Service before paying the 24.95/month fee.
cheers