your dates are value season, so that is great!
The best rate you should be able to get for GF garden view is $199 + tax.
But that is if a great discount code comes available.
2003 rack rate for the GF garden view is $339 per night. Hopefully a code will come out and you can get a better rate. Maybe consider an AP if no code rate is available, you might do well with an AP rate. We went in Nov.2001(value season)at the GF for $199 per night with an AP rate. Good luck!
Your dates this year, the annual passholder (AP) rate was $255/night with taxes for a garden view. The best available rate for that time was around $250+ for a garden view room (it was a code rate, only a few dollars cheaper than the AP rate). I wouldn't expect the $199 ($221 w/ taxes) rate in the summer, you'd probably see between $255-$275 per night including taxes for a garden view.
Instead of explaining the Annual Passes, check out this link and it explains it much better than I could! http://www.wdwig.com/apass.htm
Also check this site for discounts and you can also see here what the AP rates are now. They are cheaper now than what you'll see in the summer. http://www.mousesavers.com/disneyresorts.html