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A membership costs $10 US for one month (or $90 for a year) and allows:

  • Numeric search by up to 10 properties at once.
  • Bookmarking of materials.
  • Comparison of up to 30 materials at a time.

This is an early version of our premium offering: the feature list is short, and the fee is set low. As new features are added, existing members will get them for free. And in the meantime, your contribution will be helping fund the ongoing development of the entire website.

To proceed, please create an account and confirm your email address. You will automatically receive a 7-day free trial.

I have reviewed the End User License Agreement and Privacy Policy, and agree to the terms.