Gots/Wants Ratio (G:W List?)?

A list that provides this information could be a helpful way to identify which beers are harder to get than others. The ratio between the two might also be a interesting metric.

In general, I think the highest rated beers are usually the ones with the highest wants/gots ratios. If you go to a beer's page, you'll see the total number of wants and gots listed on the right side next to those categories as "w/ xxx others" where xxx represents the number of people with the beer on their wants and/or gots list. For example, Heady Topper, the highest ranked beer has 3,106 wants and 526 gots. Pliny the Elder and Pliny the Younger also both have over 3,000 wants, but have much different ratios because Pliny the Younger is only available on-tap once a year whereas Pliny the Elder is bottled. On the other end of the spectrum, it is interesting to look at the ratio of gots/wants for beers with low rankings. Bud Light only has 67 wants compared to 5 gots.

Like you, I like to try beers that are rare or difficult to get if I have the opportunity because you never know when you may get another chance. I usually try to look at the total number of reviews when selecting beers as low numbers generally indicate that a beer isn't readily available (or might be new).