Offers and Promotions Challenger Online Voucher Codes: Up to $70 Off PCs and Notebooks, $11 Off Monitors, Until 15 Nov 2026 Challenger's online store has a set of promo codes running to 15 Nov 2026, from $15 off selected PCs and notebooks to $11 off selected monitors, plus 11.11 Online Flash Deals ending 9 Nov. Nov 8, 2026