Firstly, I have been collecting comics since I first saw them in about 1972. They have shaped my entire life in some way or another I am now 52.
It is truly a great hobby, so rewarding just over and over and over.
I recently had a stroke and three brain surgeries. This kind of experience has left nearly everyone who goes through it, dead. I am very lucky.
So as I recovered, I had to deal with a 5000 comic collection. It was in a storage unit eating up money I didn't have anymore.
I could not even barely lift a box now, physically. I set out to sort them and learn grading despite my handicap. (what else could i do?)
I gave ten boxes away to children in my neighborhood. They never had comics before, now they each had 250.
The entire collection was sorted in my own criteria. Anything under 20 dollars was given away. That left me with ten boxes. I also kept all series intact despite value. fantastic four, spider man, etc.
The remaining ten boxes i then looked at high dollar books and what sells potentially.
The examples of higher dollars being infinity gauntlet 1 and a Doom Patrol with a first appearance by beast boy. obscure.
There is no question CgC should be your grading company. They are unmatched.
Their staff has been valuable every time. Their insurance and sales value are undisputed value numbers for the most part.
I'm going to digress here. As a child I read everything I could. I was conscious of condition, but reading them was first and foremost. My trailer burned down when at 16 and I lost all those seriously read books. They did their job, though.
I bring this up because I have I read the crap out of comics. Now a sealed book never appealed to me. But now we have both omnibus and digital forms.
Many collectors I know are interested in key books raw as well as slabbed.
So back to cgc and my books. You cant go wrong it all comes down to your choices now and should you do it at all. It is always good to remember, your non slabbed comics are well protected, they should not degrade no matter what time passes now.
(More brevity needed.)
My ant man 1st and my doom patrol came back poor. But my 1st appearance power man iron fist was exceptional. I removed it from the sell pile to keep because of potential value and condition. Also no matter where I look I cannot find it in my graded condition. Hold that one I thought.
Overall I was very happy. Also once comic shows in your area begin again, you can drop your books off there and avoid 1 of two postal fees.
Sort your collection into your highest value books and then get a second opinion. You can always sort and sell nothing should you desire.