I'll level with you, it's pretty common to see blanket per page pricing offered by web designers, but tiered pricing is a gimmick, and is generally inflated and unfair. To agree to a set price before discussing actual content and scope means the client is agreeing to "worst case scenario pricing". A page that is a simple introduction to a business or event is very different than a parts catalog with 30-40 items per page. People like to see prices, I get that, but making someone pay more for something based solely on the number of pages means some people pay more than they should. 

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So, let's talk about your project. If it's easy, I'll charge for the actual work I put into your site. If it's a more challenging project, or you're the kind of client that asks for the impossible, "can you make the website smell like chocolate?", I'll still charge you for the work I do, but it will cost more.