Funimation in the US typically re-release their standard edition blu-rays as cheaper releases, either as a "s.a.v.e." or "essentials" release, the essentials ones have the same artwork as the standard release but with a banner on the front along the top, "s.a.v.e." releases seem to use older artwork and have a big yellow/green banner along the left side and the spine, here's the two releases for Michiko & Hatchin on amazon.com;
The "s.a.v.e." ones seem to be older, lots of DVD releases under it, I think they phased it out when moving away from DVDs, curiously though there are a few releases like the above that have both.