(Image credit: Getty) Finding a good deal on a prebuilt gaming PC isn't easy these days, especially with the ongoing global memory crisis. But what are the chances of stumbling across an unbeatable deal while you're out shopping for rotisserie chicken? Well, that's exactly what happened to one lucky Costco shopper, who walked away with a heavily discounted iBuyPower gaming PC for $1,140, down from its original price of $1,899.99. Now that’s a true winner winner, chicken dinner. According to their post on the PC Master Race subreddit thread, u/klcp20 stumbled on one of the last display units at Costco during their weekly groceries run. While display units are generally sold at a discount to free up showroom space, buyers should keep in mind that such systems may have been on display for months and could be missing some accessories.…