Just in case those who are wondering why their site is down, it is because they are in the process of transferring to the new owners Ryan & Janet who are based out of Boulder, CO and purchased the business from Art recently. Ryan just posted yesterday that the Comet website will down for a bit today as their ecommerce platform is updating things in the backend.
You can read more about it here on pinside:
https://pinside.com/pinball/forum/t...custom-instruction-cards/page/16#post-2930492