Like Amazon’s summer Prime Day sales event, Prime Big Deal Days offers an extravaganza of savings on a number of popular tech categories. The official start date for Prime Big Deal Days is October 8, but we’re already finding some tasty discounts on desktop PCs, laptops, storage drives, monitors, and more. Our list of the best Amazon deals below has been curated by PCWorld’s tech experts, who collectively have been testing PC hardware for decades and have a razor-sharp sense of what products are worth buying and what deals offer the greatest value. We’ve checked Amazon pricing histories to ens…