Boat EconomicsStorage, Maintenance, Insurance, and Reserve
Is This Service Job Actually Worth Doing Yourself?
Compare a shop quote against the real cost of DIY, parts, one-time tools, your own time, and any rework risk, first time and repeat, not just the labor line on a quote.
The labor line on a quote is not the real DIY comparison
A shop quote's labor line looks like the number to beat, but the real DIY cost includes parts you'd pay for anyway, tools you may need to buy once, the value of your own time, and any warranty or rework risk. Skipping those makes DIY look better than it actually is for a one-off job, and skipping the "repeat job" math undersells DIY for work you'll do again.
How this is calculated
First-time DIY cost adds parts, one-time tools, your time (hours times your stated hourly value), any warranty impact, and any rework contingency. Repeat DIY cost drops the tool purchase since it's already owned. First-time savings compares the shop quote to the first-time DIY cost; over multiple expected repeats, total savings compares the full shop cost against the full DIY cost including only one tool purchase.
Worked example
A $500 shop quote against $150 in parts, a $50 one-time tool purchase, and 3 hours of your own unpaid time comes to a $200 first-time DIY cost, a $300 first-time savings. Do the same job three times and the DIY total is $200 plus two repeat jobs at $150 each (no tools needed again), or $500 total, against $1,500 for three shop visits, an $1,000 savings over the three jobs.
Common mistakes
Valuing your own time at zero for every job overstates DIY savings if that time actually has an opportunity cost to you; enter a real number if your time is genuinely scarce. The other mistake is skipping this tool's competence checkbox and treating any DIY savings as automatically the right call regardless of the job's risk level.
Frequently asked questions
Should I always do the job myself if it saves money?
Not automatically. This tool shows the cost comparison, but it does not give instruction for safety-critical, fuel-system, electrical, or manufacturer-restricted work, and it does not recommend DIY until you confirm the job is within your skill level and manual guidance.
How is "first-time" different from "repeat" cost?
The first time you do a job, you often need to buy tools you will reuse later. Repeat jobs skip that tool cost, which is why DIY tends to look better economically the more times you expect to do a given job.
What is the "break-even labor rate"?
It is the value your time would need to be worth, per hour, for DIY to cost the same as the shop quote. If your actual time is worth less than that rate to you, DIY saves money; if it is worth more, the shop quote is the better economic choice.
Does this account for the risk of doing it wrong?
Only if you enter a rework contingency cost yourself. This tool does not fabricate a probability of failure; qualitative risk is your judgment call, informed by your own skill confidence and the job's complexity.