There are domains where they are bid up to over 20% of GD appraisal and still don't reach their proxy amount. e.g. recycle//my//car dot com HD won for $413 and GD appraisal is $1956. It is now listed for $5995. wireless//times dot com HD's max was $439 (they lost) and GD appraisal is $2128, so again over 20%. There are more examples, just two off the top of my list.