Hi there!
I am a Spanish collector from Madrid. I have been reading comics my hole life and worked several years in comic book shops in my hometown. Comics are my passion and I always collected them. But now I have a better job and a little bit more money so I decided to star an American Comic book collection a few months ago.
I started buying my favorite comics from my childhood (secret wars, First Frank Millers Wolverine...), but as soon I went deeper into collecting, I keep finding crazy prizes on some issues (even 2-3 year old issues - see 1st issues of Locke & Key, Scalped, the New Ms. Marvel, Seven to Eternity... etc for more than 250$ O_O)
So my question is: Is there an online guide, an index or something where you can find an approximate comic market value?
Sometimes I am kind of lost and I don't really know if I am paying too much or not for a book. The only tool I have actually is comparing finished auction prizes on ebay or comic link but I don't know if thats enough.
For example, a guy I know is selling an Amazing Spiderman #300 CGC 9.4 for 400€ (+-450$) - I see many different prizes on ebay to have a proper idea, so I am a little bit confused.
Thank you for your help. (And sorry for my English)
best