What's It Worth?

Inspired by Brightest Bulb in the Box, I've taken to weighing my products before and after use in order to measure how much, exactly, is used every time I wear something. This page is very much a work in progress, and I'll be adding to it as I measure my products (I don't calculate the average until I've collected at least 5 data points, and since I'm cheap/lazy, I pretty much only weigh things when I'm actually wearing them). For each product listed, I include:
–The name (the type of product)
–Retail price and size in g, as stated by the brand
–Average:
Amount per application
Price per application
Number of applications per container
–How long a container would last, assuming I wore it constantly for a 10 hour day (number of applications/day varies depending on the product, but is noted for each)

LIPS
Revlon Sugar Plum (sheer lipstick)
$7.50 for 2.55 g
0.008 g/application (0.007-0.009 range)
$0.024/application
319 applications
Lasts 53 days at $0.144/day, applying every 1.5 hours

MAC Plumful (sheer lipstick)
$15 for 2.83 g
0.007 g/application
$0.037/application
404 applications
Lasts 2+ months at $0.224/day, applying every 1.5 hours

YSL Rouge Volupté Shine 6, 12, 13 (sheer-medium lipstick)
$34 for 4.25 g
0.008 g/application (0.007-0.010 range) (applied with finger from sample; amount applied straight from tube may differ)
$0.064/application
531 applications
Lasts 3.5 months at $0.32/day, applying every 2 hours

Shu Uemura PK 375 (opaque lipstick)
$30 for 3.12 g
0.005 g/application
$0.053/application
624 applications
Lasts 5 months at $0.212/day, applying every 2.5 hours

Shiseido Nymph (liquid lipstick)
$25 for 5.67 g
0.012 g/application (0.010-0.015 range)
$0.053/application
473 applications
Lasts 4 months at $0.212/day, applying every 2.5 hours

Le Métier de Beauté Lip Crème Purple Haze (liquid lipstick)
$36 for 6.24 g
0.012/application
$0.069/application
520 applications
Lasts 3.5 months at $0.345/day, applying every 2 hours

Le Métier de Beauté Lip Crème Fraise Crème (liquid lipstick)
$36 for 6.24 g
0.015 g/application
$0.087/application
416 applications
Lasts 3.5 months at $0.348/day, applying every 2.5 hours

L'Oreal Shine Caresse Endless Red (lip gloss/stain)
$9.99 for 5.95 g
0.03 g/application (first layer 0.017 g, 0.015-0.019 range; second layer 0.013 g)
$0.050/application (applying 2 layers)
198 applications (applying 2 layers)
Lasts 2+ months at $0.15/day, applying two layers every 4 hours

Korres Lip Butter Quince (tinted lip balm)
$12 for 5.95 g
0.013 g/application (0.012-0.014 range, with one 0.020 g outlier)
$0.026/application
458 applications
Lasts 2.5 months at $0.156/day, applying every 1.5-2 hours

Giorgio Armani Flash Lacquer 608 (medium-sheer lip gloss)
$29 for 6.24 g
0.022 g/application
$0.10/application
284 applications
Lasts 1.3 months at $0.71/day, applying every 1.5 hours

Chanel Aqualumiere Savage Grace (medium-opaque lip gloss)
$29.50 for 5.39 g
0.026 g/application
$0.143/application
207 applications
Lasts 1.75 months at $0.572/day, applying every 2.5 hours

Burberry Mallow Pink (medium-opaque lip gloss)
$27 for 5.67 g
0.021 g/application
$0.10/application
270 applications
Lasts 2+ months at $0.40/day, applying every 2.5 hours

PRIMER
Make Up For Ever HD Microperfecting Primer
$34 for 28.63 g
0.17 g/application
$0.20/application
168 applications
Lasts 5.5 months at $0.20/day

Clarins Instant Smooth Perfecting Touch
$34 for 14.17 g
0.093 g/application
$0.22/application
152 applications
Lasts 5 months at $0.22/day
OTHER
Make Up For Ever Aqua Brow (brow gel)
$20 for 6.52 g
0.012 g/application (0.010-0.013 range, though 0.013 g is definitely too much, and I have really thick brows, so most people would use even less)
$0.037/application
543 applications
Lasts 1.5 years at $0.037/day

LORAC Behind the Scenes Eye Primer
$21 for 13.32 g
0.016 g/application (0.011-0.018 range)
$0.025/application
833 applications
Lasts 2.3 years at $0.025/day

BECCA Beach Tint Duo in Watermelon and Fig (lip/cheek stain)
$16 for 2 x 3.97 g
0.012 g/application (cheeks or lips)
$0.024/application
331 applications/tube (662 total)
Each tube lasts 1 year at $0.024/day (when worn as blush)
–Based on this data, the full size Beach Tints at $25/6.80 g would cost $0.042/application and would last nearly 2 years with daily wear. The minis are a better value and also cheaper, but only include those 2 colors (and anyone much darker than NC15 would probably find Fig to be too light, which would knock down the value considerably).

MAC Matchmaster 1.0
$34 for 33.45 g
0.099 g/pump; 2-3 pumps = 0.250 g/full-face application (for me!), on average
$0.254/application
133.8 applications/bottle
Lasts 4.5 months at $0.254/day
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