There are axe specific forums that have information like you need like Bladeforums & Bushcraft USA. I've collected them over the years as well, mostly vintage. Not sure if yours are new, old or both. Depending on how many you have it could be a tedious process but quality axes are worth something. Take time to list/itemize them with a description and take clear pics of each. I'd suggest a basic length/width dimension and pics of the item; full length, closeup of the head, both sides, closeup of any label or embossing on the head and handle (if any). Markings are important for identification. At least make a list of them all, relating whatever markings are on the head. Most axe guys will know what you have with as little as the marking on the head but the more info the better. The related forums usually have 'For Sale' threads that you can post items in. And there is eBay. Lots of axes for sale there. You might look locally and see if there is a bushcrafting community or training org near you that could offer some insight.