If you don't use world of warcraft you won't have many sales. Most of the people on eGay are searching world of warcraft, not wow leveling because they want to buy the game. You will need approval to use world of warcaft, gold and leveling in your titles and descriptions because eGay does not allow selling virtual items since 2007 and these keywords are automatically banned. For approval you need to contact eBay and tell them you wrote some wow guides and you will have them shipped on CDs.
The trick in getting many sales is to list an item every 30 minutes with world of warcraft in title so you can always be on the first page of results. I don't remember how you can automate this..maybe with turbo lister or something. I think the better the feedback you got the better your auctions will pop up in search but this is something only time will fix unless you already have a user with great feedback.
To pull of more money you should have 5 guides:
1. Gold Guide $5.95 or 6.95
2. Alliance Leveling $9.95
3. Horde Leveling $9.95
4. PvP Guide $9.95
5. Complete Guide (all guides with discount) $19.95
Make sure your listings will look a lot nicer than your competition, it will boost your sales.
I don't know about stealing the guides , I had my own but I guess it's OK as long as you change the looks, I mean I don't think the owner will pay $2500 for a plane ticket + lawyers and stuff to sue your ass in EU. I wouldn't worry about that, but if the owner will find out you will sure get your ass banned from eGay.
Using kunaki.com is not an option, I see on their website you have to pay $5.20 for shipping and manufacturing. To make this work you have to pay a ton of listing fees and you can't go higher than $9.95 / guide because you won't have sales. So I don't see much profit here. You must find a much cheaper way to ship out the cds.
Money !? well.. 2 years ago I was making $1500+/m but I got banned in 3 months because I never sent out a CD , all customers got from me was a download link.
For this to work make sure your listings are really imba and find a $2 s&manufacturing for states because that's where you'll have most of your buy outs.