Kitty Wireless has a new 25% off coupon that will save you a little money.
Use Coupon Code SERV25 during checkout to save 25% off any New Activation, ESN Change, ESN Swap, ESN Reset, ESN Check, Device Release or Port Request on kittywireless.com now through 12/31/2011 at 10:00pm Eastern Time.
Most of these services have a regular price of $8.99 so using the coupon saves you $2.25
Note that PagePlus will do some of these services for free if you're willing to spend some time waiting on hold and dealing with agents who are sometimes a bit stressed out and confused. If your time is valuable using Kitty Wireless automated services will save you lots of time for a nominal fee.