Last week I showed you how to give AI a job title before you ask it anything. This week, let’s put that trick to work on something that can save you real money: the estimate.
A furnace quote right before winter. A mechanic’s list of “while we were in there” repairs. A hospital bill full of codes nobody can read. Most of us look at the total, wince, and sign, because we don’t know which lines are fair and which ones are padding.
You don’t need to become an expert. You just need a second opinion that’s free, fast and on your side.
What you’ll need
- A phone with ChatGPT, Gemini or Copilot installed. All three can read a photo. I’ll use ChatGPT in the steps below because it does this job well.
- The estimate, on paper or on screen.
- Five minutes.
Step 1: Cover the private stuff
Before you take a picture, cover or crop out your name, address, phone number, account numbers and anything like an insurance member ID. The AI doesn’t need any of that to judge whether $400 for a part is reasonable.
Step 2: Snap it
Open the ChatGPT app, tap the + next to the message box, and choose Camera to take a photo (or Photos if you already have one). Lay the paper flat in good light, and make sure every line is readable. If the estimate runs more than one page, add each page.
Step 3: Hire your consumer advocate
Paste this in with the photo, and fill in the brackets:
Act as a consumer advocate who is protective of my money. This is an estimate for [what the job is] from a [contractor / mechanic / medical provider] in [your city and state]. Go through it line by line. For each item, explain in plain English what it is and whether it’s necessary, recommended or optional. Flag anything that looks overpriced, duplicated, vague or padded. Tell me what this kind of job typically costs in my area, and be honest about how confident you are. Then give me five questions to ask before I agree to anything, and a short, polite script I can use to ask for a better price or a clearer breakdown.
That’s the whole trick. The answer you get back reads less like a search result and more like a friend in the trade walking down the page with you.
Tweaks for different kinds of estimates
Car repairs: Add “Tell me which repairs are urgent for safety and which can wait a few months, and whether the labor hours look normal for this job.” Ask whether the parts are original equipment or aftermarket, because the price difference can be big.
Home repairs and contractors: Add “Point out anything that should be spelled out in writing but isn’t, like permits, cleanup, warranty or the brand and model of equipment.” Vague line items like “materials” or “misc.” are where padding likes to hide.
Medical bills: First, call the billing office and ask for an itemized bill, not the summary. Then add “Explain each billing code in plain English and flag anything that looks charged twice or doesn’t match a [visit / procedure] like mine.” Duplicate charges and services you never got are more common than you’d think, and the billing office can’t fix what nobody points out.
What AI can and can’t tell you
Here’s the honest part:
- It’s great at explaining. What a line item is, what a code means, what questions to ask. That alone puts you in a much stronger spot.
- It’s good at spotting red flags. Duplicates, vague items, “recommended” add-ons dressed up as must-haves.
- Its price ranges are educated guesses. It doesn’t know your contractor’s costs or this month’s prices in your town. Use its numbers as a starting point for a conversation, not as proof that someone is ripping you off.
- It doesn’t replace a second quote. For anything big, get at least one more estimate. Now you’ll know exactly what to compare.
And be nice about it. Walking in with good questions gets a much better result than walking in with “the computer says you’re overcharging me.”
Coming up next
Next week: using your phone and a little AI to build a home inventory in an afternoon, the list you’ll be very glad to have if you ever need to file an insurance claim.
As always, if you get stuck with any of this, or anything else on your computer, I can connect remotely and help. Schedule a session here, email me at billj@askbillfirst.com, or AskBillFirst | Contact Us.
Filed under: Future Tech, Quick Wins |
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