I've heard that the grandfathered pricing went away in July, so clients can no longer renew their perpetual maintenance at the lower pricing. But, if your client is interested in upgrading from perpetual to 100c (subscription), they can get the lower pricing when they move from perpetual to 100c if they do it at least 90 days before their renewal date (because the old pricing will still be in the system until then). Unfortunately, this won't work for any client that has already renewed since July.