HowardForums.com has several threads with details of a lower cost data option from ATT that does not appear to be documented on the website. I have not tried this option yet, but plan to test soon. Here are some details that I've pulled from the forums.
ATT Go Phone Pay As You Go now has Unlimited MediaNet for $19.99 per month. The $1 daily fee only applies when a voice call is made or received. It does not apply to texting or data usage only.
http://www.wireless.att.com/cell-pho...repaid.jsp#pyg does not currently document monthly MediaNet.
Connection Settings
Connection Name: MEdia Net
Data Bearer: Packet Data
Access Point Name: wap.cingular
User Name:
Prompt Password: No
Password:
Authentication: Secure
Homepage: http://device.home
MediaNet has to be purchased every 30 days. To purchase packages, simply call Automated Customer Service (611 from your handset or 1-800-901-9878 from a landline phone) and select the option 'Buy Features.' The cost of the package is taken from money you have on the account.
AT&T does not charge for SIM cards in-store. Just go in, tell them you want to set up a new Pay As You Go line... and the SIM card is free. Usually, to save time, they won't even set up the account in-store, and will just hand you the card (it helps to ask... they don't want to waste the time in-store to do it). Note: This only only applies to corporate-owned stores.