I'm purchasing my first bong, and the one that i would like to buy has been out of stock since the second i saw it 3 weeks ago (BioHazard 5mm - Single Tree - 3 arm Percolator Bong - English - Grasscity.com). i emailed support and they just said to keep checking back? Any idea how long out of stock items usually stay out of stock? I know it's a broad question, im just really antsy to buy this bong.