Coins Catalog — Colombia, 20 centavos, 1967–1969

I wanted to know why the source of how the Price is obtained is not indicated? I realize the KM# will identify as Krause & Mishler but the amounts listed are different than the actual Krause and Mishler Price in their catalog. Also the Quality only states Uncirculated. I'm sure I don't have to say this, but what about all the quality grading scale breakdown that coins are graded on? Depending on the quality the price can drastically change. Also a note providing the date the information was last updated would be nice. You have a good outline for this site. However providing some improvement on the areas I mentioned could make the site much more reliable and informative.

I just noticed if I click on the camera icon a date for when the price was listed is provided. For this particular coin the information for price is from 2009. That is unbelievably out of date!!! Don't want to sound rude. I'm providing some constructive criticism :)

There was only one coin in our store in 2009. Of course it's out of date. Our catalog's price is based on coin's price in our store.
In catalog UNC means quality of stamping(not the quality of current coin).