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Safari is currently at version 2.0.4 and not available for download. Updates to it come together with operating system updates. 3 is just a beta. You can always submit beta bug reports to
http://bugreporter.apple.com/ Perhaps you want to suggest they offer it via FTP download through a beta report?
Switch internet providers. There is no cost difference on most internet providers. Obviously some have hoodwinked the public into believing you have to have a metered rate. You don't. Almost all internet service providers in the U.S. are flat monthly rates.