IBM Informix database server is available in several editions to suit all deployment requirements. Two editions are completely free.
Some editions have restrictions on the breadth and depth of features and functionality that can be used, and pricing for these editions varies accordingly. Regardless of the edition used, all Informix editions come with the full implementation of the Dynamic Scalable Architecture (DSA) with its unmatched performance, reliability, ease of use, and availability.
Please contact IBM for Informix editions pricing.