I dont' know of this particular website, but those who make resin models seem to come and go pretty regularly. Seems they might be good modelers and can make the product, but they often aren't good in the business side.
I ask because it appears that their website doesn't exist anymore (the address above is an archive), so I also assumed that they had gone out of business. I too would like to get one of their UP turbines...saw one on ebay last week but didn't get to bid on it...guess I'll call the number on the archive site and see if the operation is still up and running.