Be on the lookout for these types of documents by mail. While they are a legitimate registrar reseller, they overcharge for domain transfers, renewals and registrations and make it seem as though your domain is currently registered with them. They operate within the law but are getting you to transfer your domain away from your current registrar to them.
Here is a sample document one of our customers received. Look at the 1 year price! If you have any questions regarding a domain you have registered with us or with any other registrar, please don't hesitate to open a support ticket.