how badly & how fast you need money is a question. do you need money in the next 30 days?
if so, no auctioneer can do that for you. It takes time to get material in and processed and of course, there are fees and you have to accept whatever price your poster gets on that day.
my first suggestion for those needing FAST cash is eBay
if you create 7 day auctions, you get paid and have your money within 14 days in general and they also have 1-3 and 5 day auctions
also of course, list posters here
my own experience with other auctions tells me that unless I have something very valuable that Heritage could sell in a Signature Auction, is that they can't help me when it's needed very fast
one auction I sent 500 items to once and it was
5 months before they opened my package <<< clearly that was neither appropriate nor sufficient.
If they hadn't send my remaining material back in 2010, I think I would still be getting $26 checks as they sold 5 items a month for the rest of my life
selling by auctions can be a time consuming issue and if you need the money fast, selling them by yourself is the best option
if you need a primer on packaging - here is a primer for shipping folded items
http://www.movieposterbid.com/packing_tutorial/be sure to have good cardboard and not used crap. Priority Mail boxes are free at your post office, you need size #1095 and if the post office does not have them out, you can order them online for free