Is there any kind of covrprice for signatures?
Other than just checking ebay sold listings, are there any tools to estimate value with and without a creator signature, the way covrprice helps estimate raw vs slab values? I know the specific creator and the condition of the comic and a lot of other factors play a role, but it's very hard to tell sometimes how much extra you should be willing to pay for a signature. Like I know Claremont is "easy" to get, but it's not always easy to find a signing, find a facilitator, and find pricing for all of that to compare to an already signed book.