Yes I was just going to say you don't have to auto renew anything.
If you want to check or alter your auto-renew status, here are some instructions from Major Nelson's site:
http://majornelson.c...t-auto-renewal/
You can check/change it from the link provided in that doc.
Here is an example of what it should look like if you don't want it to auto renew:
moycon
Microsoft Points
2405
Your Account Summary
Xbox LIVE Prepaid 1 month Gold Membership Card
Expiry Date: 8/7/2011
Automatic Renewal: Off <-----
Payment Option: n/a
2 months for 2 bucks sounds like a decent deal to me for someone who was actually interested in the service.