Q: how to renew imatch without auto renew

Hello shadow3c,

You could ostensibly disable Auto-renew, and then sign back up for iTunes match once the subscription expires.

To turn off Auto-Renew for iTunes Match

iTunes Match will automatically renew your subscription at the end of your 1 year subscription by default. To turn off Auto-Renew:

1. Open the latest version of iTunes
2. Choose Store > Sign In.
3. Enter your Apple ID and password, and click Sign In.
4. Choose Store > View My Account. You may be asked to re-enter your Apple ID password.
5. In the "iTunes in the Cloud" section, click Turn Off Auto-Renew to the right of iTunes Match.

iTunes Store: Subscribing to iTunes Match

http://support.apple.com/kb/HT4914