License costs for upgrading from community to Enterprise

We have 300GB data warehouse on a mysql variant growing at 30GB per month. Planning to switch to Vertica community. At the current growth rate, we are good for another couple of years. Would like to know how much it costs to upgrade from community to Enterprise. Say from a 1TB capacity available on community to 2TB and beyond. I believe vertica provides multiple pricing options, and am mainly interested in per TB pricing. Thanks in advance.