Last year we rolled out parametric price alerts which let you receive email notifications when any part in a user-defined set drops below a price threshold. Today we're significantly expanding that capability to part lists.
With parametric part lists, you can filter a part category and add it to your part list. Every time the part list is viewed, our pricing engine automatically identifies the lowest price compatible part from your criteria, while using your merchant preferences and tax settings. Since prices can change several times a day, parametric part lists allow you to always view the lowest price part matching the filter criteria you set.
Take choosing RAM for example. If you only want DDR3-1600 1.5V RAM from Corsair or G.Skill, just select those filters on the RAM category page, then click the "Add From Filter" button in the Parametric box (in the filters, top-right part of the page). Your part list will then automatically pick the lowest price RAM matching that filter criteria.
Alternatively, if you want to add a case to your build, but do not want to pick from filter criteria, you can select models on a part by part basis. In the category views are checkboxes that let you select which parts you want to evaluate. On selecting parts, the parametric add button switches to "Add From Selection". If you add the selection to your part list, it will evaluate the lowest price part from that set of parts. (We also threw in the ability to compare parts with the selection as well!)
Here is an example part list that uses both parametric filter and selection criteria.
We hope you enjoy this feature and find it useful! It's been a long time in the making, and we're excited to finally roll it out for everyone to use. Let us know what you think!