Here's what they say in the mail.....
The registry operator, Uniregistry, has announced a number of significant price increases, taking place on September 8th, 2017 (00:00 UTC). Certain TLDs will have moderate price increases, while others will have significant hikes. Renewal prices will differ depending on the type of increase (details below). Despite these changes, we will continue to support all affected TLDs and we recommend that you adjust your end-user prices accordingly. Here’s what you can expect:
The prices for TLDs with significant increases will be grandfathered. This means that domains registered BEFORE September 8th will renew at the original, pre-increase price going forward. Also, you are required to quote the grandfathered renewal price at the time of renewal if you are using the API to initiate the renewal.