There is not one "level". There are many indicators that have to be watched. The more indicators will get ticked off, the more I will start to average out. But we are far from that. Indicators are e.g. house-gold ratio, DJIA-gold ratio, real rates of interest, M3-gold ratio, etc. Nominal price is irrelevant (especially in Zimbabwe).
http://goldismoney.info/forums/showthread.php?t=195370