600ct Twinkly LED gen II lights strings for $179. Not the Costco deal, but decent. Christmas Designers is an authorized reseller of Twinkly and sells in part to professional commercial decorators. All Twinkly is 40% off, but this is a particularly good deal for quantity. Lighted length is 150', I used two boxes on a 25' tall magnolia tree outdoors and it looks pretty good if I say so myself.