Hard to find issues and Hard to Believe Prices

Got a hard to find book? I bet when you do find it the price on it is ridiculous, especially if it is CGC graded. A good example of this is Avengers #25 which in the guide ranges from $100-120. There are current issues on Comiclink and Pedigree that have 9.6 issues going for $1400 dollars. Now I'm no math major, but a 140% mark up on a book is pretty stupid.

It seems that every title has one or two issues that fall under the "difficult to find" that dealers seem determined to hike the grade into Issue #1 price ranges. The thing that i find frustrating is that if there are hard to find issues (either by limited print runs or owner reluctance to sell) then these have to be reflected in the guide. Some issues are, however even in these cases you are able to find most of these no problem and at reasonable prices.

I don't know, it gets frustrating with comic interest again peaking due to movie releases and convention attention, that it seems dealers are establishing their own price rules using the guide as a baseline...and God forbid if the issue is CGC graded...sell the house.