Price at average of configurable number of lowest competitors

From MediaSell

This script will use the average lowest price of up to three sellers (Example: It will use the average of two lowest sellers if there aren't three). It also has a maximum price drop set to 30% of your base price.

// Replace A00000000000 with your Amazon ID.
// Obtain your Amazon ID by hitting 
// "Save and Verify" on Amazon settings page on FillZ.
myAmzID = "A00000000000";

price = item.basePrice;
numSellers = 3;
maxDiscount = 0.30;
minPrice = price * (1 - maxDiscount);

priceList = getPrices('sameOrBetter'); 

count = 0;
sum = 0;
if(priceList) {
  for (pind=0; count < numSellers && pind < priceList.length; pind++) {
    if (priceList[pind].sellerid == myAmzID) continue;
    count++;
    sum += priceList[pind].price;
  }
}

if (count > 0) {
  price = sum/count;
} else {
  if (debug) alert("no competition");
}

if (price < minPrice) price = minPrice;
return price;