Selling Domain Names as a Group - How?

[dvdtvshows1]

Hi everybody. OK, over the last five years I have bought over 1,000 names and have been using them to protect my company name and forward whatever random traffic might show up over to my main website. But things did not go all that well and now I need to sell off at least half of the domain names. But I never parked any, never sold any, and have no idea how to navigate such a sale.

So I want to sell 500 domain names.
For most of these names, I have the .com .net and .info domains.
For a few, I have .com .net .org .biz .us .tv .info .mobi and .name.
It seems to me that if I sell the domains for a title as a group, it should be worth more than selling off the collection one URL at a time.
But is that true? For instance is a group of tv-season.com tv-season.net tv-season.org tv-season.biz tv-season.info worth more than if I sell them off individually? What is the best way (the one that gives me the highest net selling price) to sell a group of domain names as a group?

Thank you in advance for your help.

[dvdtvshows1]

Here's a sample group of 66 URLs (9 root terms) that I want to sell as a group:
2-dvd.net, 2-dvd.org, 2-dvd.biz, 2-dvd.us, 2-dvd.tv, 2-dvd.info, 2-dvd.mobi, 2-dvd.name,
2dvd.org, 2dvd.tv, 2dvd.mobi, 2dvd.name,
2-dvds.com, 2-dvds.net, 2-dvds.org, 2-dvds.biz, 2-dvds.us, 2-dvds.tv, 2-dvds.info, 2-dvds.mobi, 2-dvds.name,
2dvds.net, 2dvds.org, 2dvds.biz, 2dvds.us, 2dvds.tv, 2dvds.info, 2dvds.mobi, 2dvds.name,
todvd.tv, 2dvds.info, 2dvds.mobi, 2dvds.name,
todvds.net, todvds.org, todvds.biz, todvds.us, todvds.tv, todvds.info, todvds.mobi, todvds.name,
toodvd.com, toodvd.net, toodvd.org, toodvd.biz, toovd.us, toodvd.tv, toodvd.info, toodvd.mobi, toodvd.name,
twodvd.net, twodvd.org, twodvd.biz, twovd.us, twodvd.tv, twodvd.info, twodvd.mobi, twodvd.name,
twodvds.net, twodvds.org, twodvds.biz, twovds.us, twodvds.tv, twodvds.info, twodvds.mobi, twodvds.name.

What is the best way to market and do this kind of sale?
Is a broker a good idea? How do I find a good one? What is their commission percent?