First of all, I Think I may have hit a nerve, and so I must apologize. Offending you was not my intent.
As far as what you're selling your product for, the numbers you have are roughly in the same ballpark of the numbers I've heard. Honestly, It might be wise to ask your attorney what he or she thinks though. Dealing with contracts (like selling large quantities of your video to a national chain) are sort of a specialty of theirs, and if your lawyer doesn't have a book with what sort of number you're looking for, then they have networks of lawyers across the country who do. But, and don't be offended by this, because it's not just you, but society in general. I get really nervous in this modern "Let's sue the bast**ds!" world we live when giving advice to people who are as "lawyer-happy" as your last post seems to let on. And since the last thing I want is to give someone bad advice that leads to them sicing lawyers on me, for my own self-intrest, I can honestly say that none of my advice should be taken without the consult of an attorney.
Now, as far as my comments about "competition" go, the only thing I was trying to say is that sooner or later, you are going to have some. While your exact creations, and very similar copies of them are your property, creative derivations of whatever form of art you do are not protected. I have no idea what it is that you do, but if someone takes an artform or style, and they do it themselves just a bit differently from the owner of the original concept, legally they can call it their own and sell it. You can send lawyers to them, and threaten to shut them down, and most people will comply simply because they don't have the time or desire to get into a legal battle. But sooner or later, you'll run across some hard nosed artist whose going to call your lawyers bluff, take you to court, and if their product is sufficiently different, win the right to sell their product. And that day will open a door for hundreds of people doing just what she did.
I'm not saying this to rile you up. I'm saying this because I've seen it happen, even in my own field of videography. Several years back, I read a case about a nationally known videographer who sued a smaller company because they had a video product that was very similar to the popular company's. As it played out, the judge decided that since the method of creation was different, and since the product wasn't a true clone, that it was perfectly legal for the other company to offer it. And now, today, years later, virtually every videographer out there, including my company, offers some derivation of the product, the same-day wedding video.
Plus, statistically, companies that hold tight to their proprietary rights struggle a lot more than companies that allow licensing of their product. Look at Apple. If Steve Jobs hadn't come back and rescued them with the iPod, Apple might have completely died. The reason? Back when IBM was licensing rights to build their computers to anyone who wanted to, Apple insisted that they were the only company that could make their hardware and software. And that's why in the computer industry, Macs are the minority, despite that they're almost always the better product.
Maybe instead of threatening lawsuits against anyone who has an idea that's similar to yours, make money off it, by offering to make them an officially licenesed producer of (whatever your artform is)? That way, they can keep making products similar to yours, and for every one that they sell, they send you a percentage of their profits. Essentially, you'd be franchising your artform, and giving it a international market, where currently you're limited only to what you can do on your own. Doing this, you could stand to make money literally for doing nothing. The other artists create and sell the product. You just sit back and take in royalties for other people's work.
Personally, I think that's a brilliant idea. So much so, that if you do it, I think I deserve, say, 20% of your income from using my idea. :-) Seriously, though, nobody likes a hardnose, and you'll build a better reputation for not only your artwork, but also for yourself, if instead of threatening to sue into oblivion the folks who admire what you do enough to try their own hand at it, if you come up with a way for everyone to profit off it.
And like I said, there's ALWAYS competition, even if that competition is just not buying what you're selling. As soon as you think you're the only source of something, you're etting yourself up for inevitable failure. That, or an anti-trust lawsuit.
BUT Take all of this with a grain of salt. Like I said, I wouldn't listen to a word I've said without first checking with a lawyer.
PEACE!