Costco: Glass Pumpkins Set $19.99 by Rhonda July 16, 2020 July 16, 2020 8/23/16. Add some shine to your Halloween or Thanksgiving table. Costco has the Glass Pumpkins 3-Piece Set priced at $19.99. While supplies last. YMMV. What’s Included: • Large Pumpkin 8.25″ dia.… 0 FacebookTwitterPinterestEmail