We have an in-depth article on using multiple price points for the following scenarios on our blog:
Here is the article link:
http://getdpd.com/blog/2014/01/06/using-dpds-multiple-price-point-feature/
- Selling discounted upgrades to previous buyers
- Selling with a special price to a mailing list or forum
- Selling multiple licensing levels of the same product
- Selling multiple support levels of the same product
- Doing time limited promotions and special offers
Here is the article link:
http://getdpd.com/blog/2014/01/06/using-dpds-multiple-price-point-feature/