Ask for Email on Sales Page before showing price?

I noticed a couple of people in one of my (non-IM) niches that ask for the potential buyers email address before they reveal the price of the product.

So there will be a sales page, in places where you'd normally find an "Buy Now" button they have a small email form - Name, Email and a "reserve my copy" button. They have to fill out this form to get to the next page where they pick the package they want (and see the prices).

It also adds them to an auto-responder and if they don't complete the purchase within 24hrs they get a follow up email.

I see variants of this where the price is hidden, but there are "Buy Now" buttons on the sales page. This takes the user to a "Step 1 of 3" page where Step 1 is asking for their name and email. They then pick their package on Step 2, pay on Step 3.

I've got three questions if you could be so kind as to give your opinion:

1. What do you think about the 'email before price is revealed' strategy? Have you ever tested it? I realise in a very tech savvy market it might not go down well...

2. Any opinions on the Name+Email request on the main sales page vs Name+Email request on the first page of the order process (but still before price revelation)?

3. Can anyone point me towards some wide thin form designs that I can use to collect emails on my sales page? I'm using Optimize Press and what I'd really like is a wider version grey "secure order form" box that I can place a nicely styled email submit form. A WSO or package that deals with that sort of thing would be great or even just sites that implement it well that I can look at for inspiration.

Many thanks!