Since it seems that people liked the Sephora travel-size value post, I made a cost-per-ounce comparison for Ulta too. This was way more of a pain than the Sephora one because Ulta somehow 1. doesn’t always list product sizes, 2. lists travel-size products separately (e.g. if something comes in four different sizes, the three larger sizes are all on one product page but the travel size is listed separate), and 3. sometimes lists travel-size products under slightly different names. I didn’t realize #3 until I was halfway done, so there are probably products I missed because there was no full-size product with the exact same name so I thought they only came in travel sizes.
Some of the travel-sized size info I based on what I found on other sites (e.g. looking at ebay postings to get the size of the It Cosmetics Brow Power Universal Eyebrow Pencil); these entries are marked – this is just my ‘best guess’ for the travel-size product based on product sizes the company is known to produce.
Let me know if I missed/need to correct anything!