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Express the costs of consumables (over $12,100) to operate printer services offered for free to Chem majors, over a period of 1.5 years. Does not include the cost of the $2.5K printer itself. |
Summary
Consumables = (Ink + maintenance kits) + paper = $10,200 + $1,930 = $12,130 over 33 months.
This comes to about $4,411/year.
Data and analysis
Page counts | Dates | Count of | Avg pages per months | At 1.53 cents/ page, | At 0.36 cents/ page, | Cost for both |
|---|---|---|---|---|---|---|
300,000 | May 2011 - Nov 2012 | 19 months | 15,000 pages /month | $4,585 | $1,080 | $5,670 |
240,000 | Dec 2012 - Feb 2014 | 14 months | 16,000 pages/ month | $3,665 | $865 | $4,530 |
Total: 540,000 | May 2011 - Feb 2014 | 33 months | 15,430 pages/ month | $8,250 | $1,945 | $10,200 |
Hardware costs, including "consumable" maintenance kits
Printer's initial cost, including 3 year warranty: $2,500
- Amortizing cost of printer over 540K pages printed comes to 0.46 cents per page.
Cost for maintenance kits, up to now: $1,945
- 10 have been installed for the most recent 240,000 pages, at $86.40 each: $864 + $1 = $865
- Thus estimate we 1.25 additional kits (~12.5 kits) for the first 300K pages printed: $1,080
Thus, $4,445 spent so far on hardware, including maintenance kits.
Ink cost calculations
Total ink costs: $8,250
Usage Dec 2012 - Feb 2014
Ink Stick color | Use | 6 Sticks per package | Cost per package | Total costs |
|---|---|---|---|---|
Cyan | 28 | 4.67 | $69.65 | $325.26 |
Magenta | 24 | 4.00 | $69.65 | $278.60 |
Yellow | 22 | 3.67 | $69.65 | $255.62 |
Black | 76 | 12.67 | $221.40 | $2,805.14 |
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| Total ink costs for 240K pages: | $3,665 |
- $3,665 for 240,000 pages comes to 1.53 cents per page, on average.
- Thus, estimate that an additional 300,000 pages used previously (1.25 as much again) would cost about $4,585.
Paper costs
Cost for paper, up to now: $1,930
- 0.575 cents per page, if buying cheap and you don't care about the environment.
- Total of 335,000 sheets of pater used.
- 149,000 paper sheets used for 240,000 pages printed.
- Thus estimate that an additional 186,000 paper sheets used for previous 300,000 pages printed.
Paper purchase cost options
0.575 cents/ page for Staples® Copy Paper, LETTER-Size, 92/104 US/Euro Brightness, 20 lb., 8 1/2" x 11", 5,000 Sheets/Ct (if $28.77 for 5000 sheets).
1.03 cents / page for Staples® 30% Recycled Copy Paper, LETTER-size, 92/104 US/Euro Brightness, 20 lb., 8 1/2"H x 11"W, 5,000 Sheets/Ct ($51.59 for 5000 sheets)
- Contains at least 10% post-consumer recycled content
0.67 cents/ Staples® 100% Recycled Copy Paper, LETTER-size, 92/104 US/Euro Brightness, 20 lb., 8 1/2"H x 11"W, 5,000 Sheets/Ct ($33.43 for 5000 sheets)