You can already get paid support.. by having an Apps account. This gets you access to an actual support line for emergency issues like, say, being unable to log in.
Not to mention a pretty reasonable SLA. At $50 a year, it's quite nice to have.
Do you know a good method of going about this? Thunderbird's backup utility (syncing to Gmail, downloading, then saving the thunderbird app data locally) is broken. Each backup / restore via TBird lost another ~350 emails.
I use it to backup both my personal Gmail account and my Google Apps work account, as well as my Flickr account. Its cost effective, and helps me sleep at night, considering my entire life is stored online.
If you're on UNIX/Linux, offlineimap[1] seems to work fine. I use it as my main email access, syncing IMAP to a Maildir which is then read by the client, and I've never lost an email.
Even with Gmail, I hope you have a second copy of your data somewhere. You never know when your account might just disappear.