I just found out about this today. When I signed up with VM last December, all they had for plans was $35, $45, $55 plans. The $35 plan is just great for me and I signed up for it. But I found out if you logon to your account @ VM, and request to change your plan, it will show you th $45 & $55 plans. It also has a button with "If you don't see what your looking for", click the button and it now shows a $25 plan which is the same as the $35 plan (300min unlimited Text, unlimited data). This will only work for the LG Optimus V owners. If you want to save $10, give it a shot.
I just switched today with it going in effect on 9/20 which is my normal billing date.