I have created a shopping cart price rule in my Magento store (version 1.4.1.1), and it seems to get applied without issue on the frontend, but the discount isn't actually reflected in the subtotal or final total. The original item price is $45.00, and the discount should be $35.00, making the final price $10.00. Here are some screenshots of the setup. (Sorry, because I'm a new user it won't let me post images directly in this posting.)
This particular item has some custom options set, which set the pricing for four individual options. The price for the product is $0.00, and then each option has it's own price (I didn't set this part up, so I'm not sure if I'm missing something from here too). Here's a screenshot of the product custom options page: http://imgur.com/uO9HG
Any thoughts? I'm fairly new to Magento, so it's possible I'm just missing something obvious. Thanks in advance for any help or guidance!
I actually JUST figured out what was going wrong, or at least, I figured out a solution, though not sure exactly why this was affecting the shopping cart price rules. You're right that I wasn't even able to get a simple price rule to work - it simply wasn't working no matter how I changed the rule. Anyway, while working on another issue, I realized that I was missing the Subtotal/Grand Total box on the front-end of the shopping cart (I installed a clean copy of version 1.4.1.1 on my localhost, which is when I noticed it was missing from my live site). When I re-enabled the Subtotal/Grand Total box, the rules started working again. (I suppose now that Magento has a place on the front-end to show the discount, it actually applies it, whereas before it would just do nothing.)
So, to re-enable the subtotal/grand total box, in the back end, I went to System > Configuration > Advanced > Enable the Mage_Tax module. Again, not sure why it was disabled in the first place, and I'm not sure if this affects anything else on the site, but it's been up for awhile now and I haven't noticed anything awry. Here's a screen capture of it working: http://i.stack.imgur.com/kjl6S.png