What To Do With All These Books?

Having finally finished updating my personal database for all our books, I've started listing them on Amazon. My goal was to be able to list them in bulk but after wrestling with making that happen for a whole day, I decided that it was easier to just deal with listing them one at a time. 

I got about 40 some books listed that way. This morning upon checking my email, I realized that one of my book had sold. Yay! Time to get it ready to ship. I have flat rate boxes, no problem. Oh, good grief! It costs more to ship that way than I charged for the book! Scrap that idea! Ok, so what are my other options??

A trip to the post office later and $1.49 spent on a padded mailer, then buying postage, I think I made a whole .48 cents on that book! Uuuuugh!! This is NOT going to be worth all the trouble I'm going to!

So what do I do with these 200+ books?? Trying to decide if it will even be worth my time to mark them all and attempt a yard sale. I'm having trouble getting to all that I need to get done as it is! I just want these books out of here! I may just take the whole lot to the Salvation Army and be done with the mess!

What are your thoughts??