Rental services are everywhere now. If you can’t outright afford something pricey, you can usually find someone who will lend it to you for a monthly fee, whether it’s a home, a car, a couch, or a DVD. So, maybe it’s not all that surprising that someone is now renting out full-fat gaming desktop PCs, but it is surprising to hear that that “someone” is case and accessory maker NZXT. The NZXT Flex program at a glanceThe NZXT Flex program is essentially a monthly subscription for a beefy gaming PC. Prices range from $59 to $169 per month based on hardware configurations. The plans have no contrac…