It seems that a common misconception exists about the Powerseller program.
Your sales have to average over the course of a three month period 1000-25,000 per month AVERAGE. Not 1000 each month.
Last January I made Powerseller in 40 days because I did over 20,000 in ONE month.
I emailed the powerseller dept. and within 3 days I had an offer link to join the PS program.
And just recently, I attained PS Bronze(correction) in my collectibles ebay account in 60 days because the 4300 I did during ANY 90 day period averaged to 1000 per month. I actually did it in 40 days but the last couple of sales I did put me over the top.
So lets say you do 3000 during 90 days. Then you lose it because the next month you did 750. So if on the very next day or 4 months and one day you sold something for 1500. You can email the PS dept. and get an offer again to become a PS.