where are you getting $90 from?
450 mins with a droid phone is $69
That's 39 for the plan and 30 for unlimited data.
Get a google voice account and send txt messages all day for free
There is also currently a trick to get unlimited everything on VZW for $89 a month.
You get the 900 minute plan for $59 data is always $30 for the android phones, 900 min plan gets you friends and family.
Get a google voice account.
Put your google voice number in your friends and family list.
When you dial out using GVoice it will say dialing using 850-583-0700
Add that also to your family list.
Now when you dial out the only number you will ever dial is 850-583-0700 and when you recieve a call the only number that will ever call you is your google voice number!
If you like to keep track of who you call on your bill this is not ideal...if you like to call as much as you like for free this is a damn good cheat