James R Maddox Jr

I bought some comics at auction, and later was approached to buy more from the owner. He was an auctioneer who had bought books at yard sales thru the years, and I started picking out the DC comics, as I am that guy. I was very surprised when I started looking at some of them on ebay, and no I don't wish to sell any of them. I've been collecting for 35 years, various DC and Marvel, etc.. Well the one that really has me interested is a Flash 105. I'm no expert grader, and I enjoy them from reader grade to brand new. I'm considering have the Flash 105 CGC'ed because it still has a very good sheen to the cover and the inside looks pretty good. What would I expect to pay to get something like that graded, and how much should I insure it for in case it gets lost in the mail. Granted, I would not consider without shipping via UPS (Fedex never delivered my Apple II software, even with tracking) and high dollar insurance as this is probably my needle in a hey stack, but I've got another 400 to 500 books that I bought from him to look thru. I posted a pic below for those with grading experience to let me know if it is worth grading.