A new version of Bargain has been released. Since we
last reported about the tool, error messages were improved, support for interlaced images was added, the user-interface was improved, it has been optimized for speed and better compression and several bugs were removed.
Bargain is a lossless compression tool for MSX images in screen mode 5 upto 12. On the Bargain website, you can find the tool itself, the sources and a comparison of Bargain to other compression techniques and formats, such as LZH, GIF or MAG.
Relevant link:
Bargain website