Your thoughts: Quiz on front-end, CPA offer on back-end?

I'm looking for a little feedback from the group here in the CPA section of the forum...

Some of you may know me as the creator of Opt-in Quiz Generator. A couple months back, I sold that script as I was near completion of the next version of that script, which will be named Quiz Squeeze Generator. It's done, but I haven't released it to the public just yet.

Anyway, many of my OQG customers also used my installation service when they made their purchase...so I've had the opportunity to see first hand how they've put the script to use. Not surprisingly, a few of the savvy customers have been using the script simply as a front-end list building tool...with the sole purpose of making continual back-end CPA offers to their list.

I've had a chance to talk to some of my customers that were doing this, and they've been pretty darn successful with this particular strategy. Some still do direct-linking, but most find it's far easier to build a list and make the offers on the back-end. Not to mention that they can make offers for as long as the lead remains a subscriber.

Let me clarify one thing real quick: when I say quiz, I'm NOT saying "poll". Polls, as used with CPA offers, are a completely different animal all together. With a "quiz", I'm talking about a single landing page that focuses on a specific topic and offers the visitor the opportunity to obtain a score or feedback on the answers they submit. A detailed analysis of their quiz results is provided via email or on-screen in the browser. The quiz-taker opts into an auto responder in order to get this valuable analysis (and or score). They can then be redirected to an offer.

Ok, now that I've cleared that up...

I occasionally create complete turn-key quiz landing page sites for my customers. This includes the research, copywriting of the quiz elements (headline, questions, answers, and analysis), the thank you and confirmed pages, and SEO of the whole thing.

Here's where I need your feedback...

I'm considering offering a 6-8 month series of quiz landing page sites that focus on one particular niche topic (probably weight loss, since there's plenty of CPA offers for the niche). I'm planning on allowing a small number of serious CPA marketers the opportunity to get a copy of the full site package each month (that includes the software script that powers the quiz landing page system).

Now, since I want to keep it small...as not to dilute the effectiveness of the single quiz list building promo...this won't be some $50 for the first 1000 "members" type thing. I'm thinking more along the lines of a few hundred dollars for a dozen or two at most.

My question to you is, what do you think the correct cap number should be? If you were using the quiz landing page site to generate leads, what would you be comfortable with as far as the number of other marketers that may be using the same (or close to same, after minor tweaks) quiz landing page site for lead generation?

I'm not 100% certain I'm going to pursue this project, but if I do...your feedback on this point will be helpful.

Thanks,
Ed