Don't forget to add that you want the software patched by next week to allow the battery to last at least 7 days average usage... Meaning 5 hours of browsing and 3 hours of talk time per day, right?
Shows up now for me so something in the market got fixed/changed/reconfigured.
If you installed GE using a manual process but now want to install from the Market you need to uninstall the manually installed copy first. From home screen touch Menu->Settings->Applications->Manage applications->Earth->Uninstall.