Anyone know where I can get the value essed on a complete collection of 33/3 rpm records by one artist?

I am preparing a will and find that none of my heirs will appreciate this and other entertainment items and I want to get some things in hands of those who will, whether I sell or donate. I shudder to think that an heir will grab this collection and throw them out on a table and sell them for 10 or 20 cents each. I could put some of these items for sale on ebay and probably detect who has a pion to possess and sell to that person, even if the lowest bidder - unless that is not allowed. If I sell to the highest bidder I might as well get a fair price based upon the true essed value. I'd rather find a way to locate a 20 - 30 something person who has a pion for what used to be and will spend time with the object(s) rather than look for a quick buck. Please, don't email me for further info as you would just be phisshing and that is what I want to avoid. Thanks