Opportunities › PC part pricing and valuation tool › Proposed app
Rigsum
Paste a PC listing, get a value grade and a part-by-part price check
- Score
- 49
- confidence 42
- Evidence
- 4
- items on the page
- Rivals
- 0
- named in sources
- First version
- 25 d
- estimate
- Type
- Mobile app
- PWA: installs on iPhone and Android
- Market since
- 2012
- Mature market · AI estimate
ScreensConcept
Mobile app: Users paste listings while shopping online to quickly compare PC prices and value on the go, making instant buying decisions. Sample screens on a phone, in the proposed brand. Their numbers are sample data.
New check
- SourcePasted text
- Asking price$1,150
- Parts found7 of 7
- Prices as ofToday
About this appAI proposal
Rigsum reads a prebuilt or used PC listing, pulls out the parts, and prices each one against current market data. You get one value grade and a breakdown of what every component is worth compared with the asking price.
It is made for people buying a PC online who want to know if a listing is fair but do not follow component prices week to week. Paste a link or the listing text and get an answer in seconds instead of opening a dozen tabs.
Parts it cannot identify are flagged, not guessed, and estimates are labelled. Saved checks and alerts help you act on a good listing before it is gone.
- Tagline
- Know what a PC is worth before you buy it.
- Voice
- ClearDirectCalm
- Why this name
- Rig is common slang for a PC, and sum is the total of its parts. Two short syllables, easy to say. Trademark check still needed.
In the first version
Members say which features they would use. It tells PWAS what people want; it changes no score.
Paste a listing, get a grade
Drop in a link or listing text. Rigsum extracts CPU, GPU, RAM, storage, board, PSU and case, then returns a clear value grade.
No member yet
Part-by-part price breakdown
See an estimated price for each component and the total next to the asking price, so you can see where the markup sits.
No member yet
Daily price refresh
Component prices are refreshed daily, and each check shows the date of the data it used.
No member yet
Unclear parts flagged
If a listing says only 'RTX gaming card' or omits the PSU, Rigsum marks it uncertain and shows a price range.
No member yet
Brand identityAI proposal
Check the name against trademark registers before using it.
Palette
#0F4C4ADeep Teal · primary#F6F2EAWarm Paper · surface#1C2321Ink · text#E8A33DAmber · accent#6F9C8CSage · data
Typography
Aa
Rigsum
ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789
Know what a PC is worth before you buy it.
PricingAI proposal
The material gives no competitor prices. These tiers are a starting point to test, based on the freemium and subscription idea in the opportunity.
Free
Free
- 3 checks per month
- Value grade
- Basic part breakdown
Buyer
$5 a month
- Unlimited checks
- Saved shortlist and compare
- Deal alerts
- Shareable reports
Would you pay Buyer · $5 a month?
Your answer tells PWAS which prices people accept. It changes no score.
No answers yet.
What it could be worthEstimate
What a software business making this much sells for today, from real deals. Pick a monthly revenue.
If it makes
Worth about
$194,000
Sale range $132,000 to $263,000
$120,000 a year in revenue
From 87 software businesses listed and sold on Empire Flippers in the last year, revenue vetted by the broker: they sell for about 19× their monthly revenue, most between 13× and 26×.
Measured on profit, the middle deal is 32× monthly net profit: about 2.7 years of profit.
An estimate, not an offer or financial advice. A real price depends on profit, growth, churn, how much of the work is the owner's, and the buyer.
How it would growAI proposal
How the product would reach new customers through its own use, and how the first ones would be found. A plan to test, not a result.
- Built-in loop
- Shared outputs. Users send a read-only report link to friends, forums or sellers to back a question or offer. The link shows the grade and breakdown, with Rigsum's name and a prompt to check another listing.
- Do they become customers?
- Recipients are often other buyers, so some may run their own check. To test: how many opened reports lead to a new check, and how many of those lead to a paid plan.
- First customers
- First-time buyers of used or prebuilt gaming PCs in the US who browse eBay and Facebook Marketplace and ask for advice in online forums.
- Where to reach them
- PC building forums and subreddits: Offer free checks on listings people post asking 'is this a good deal?' and share the report link.
- Hacker News and tech communities: Share a free demo with the grade method explained, building on the earlier interest in this idea.
- First milestone
- 500 checks run in a month, and 25 users paying for alerts or saved comparisons.
Why people already pay for this
- VerifiedHacker News post received 61 points and 30 comments
- Public claimUsers face decision delays when evaluating PC listings that cause them to miss deals.
- Public claimThe tool delivers a value grade and component pricing breakdown to help buyers evaluate listings quickly.
- Public claimPricing is updated daily to reflect current component market prices.
Tech stack
Every proposal builds on the same PWA base, installable from the browser on any phone or computer. Dashed boxes are what this app adds.
- AppNext.js and TypeScript
- PWAManifest and service worker
- UITailwind CSS
- Data and authSupabase Postgres
- PaymentsStripe
- EmailResend
- HostingVercel
- This app · Component price dataRetail price feeds or APIs, refreshed dailyDaily component prices are the core of every grade.
- This app · Listing parsingLLM text extraction with a part-name catalogueTurns messy listing text into a structured parts list.
RisksAI inference
- DataReliable, licensed component price data may be costly or limited, and stale or wrong prices would make grades misleading.
- AIListings are vague or wrong. Misread parts could produce a bad grade, so low-confidence parts must be flagged clearly.
- PlatformMarketplaces may block link fetching, so the first version relies on pasted text.
- CommercialBuyers shop rarely, so monthly subscriptions may churn fast. Affiliate or per-check pricing may suit better.
- Intellectual propertyThe name Rigsum needs a trademark check before use.
Everything marked AI proposal or AI inference was written by a model from the evidence on the opportunity page. The proposed name must be checked against trademark registers before it is used.