For buyers. Desktop software: drawings, spend files and prices stay on your computer.

Walk into the negotiation with your own number.

A supplier sends a price. Today the usual answer is last year's price less a few percent, or a cost breakdown the supplier filled in themselves. Diogenes builds the cost at your dock from the machine, the cycle, the material and public rates, so you can see which line has room in it.

The product page in Diogenes. The work light opens into its parts. Six part designs are made, seven parts in all, since the thumb knob is used twice. Each is costed from its own 3D file and the LED board from its parts list. The batteries and fasteners are bought in at market price; the app lists nine lines in all.

Know which part carries the price.

Two made parts carry more than half of the parts cost: the LED board and the rear housing. The two bought battery cells are the biggest single line, and theirs is a market price you can check yourself. That tells you where a conversation with the supplier is worth having.

Each made part opens to its own machine, cycle and material. Rows are rounded to the cent; the total is the sum before rounding.

PartHow it is madePer light
Two 18650 battery cellsBought in at market price$3.30
Screws and boltsBought in at market price$0.03
LED boardCircuit board, assembled$2.82
Rear housingDie cast aluminium, machined$2.73
Front bezelInjection moulded$0.42
LensInjection moulded$0.34
StandSheet metal, cut and bent$0.33
Two thumb knobsInjection moulded, $0.144 each$0.29
Parts total$10.26

The cheapest factory gate is not the cheapest dock.

Made in Mexico, the light costs $1.28 more to make than in China, and $1.62 less delivered to the US.

At 20,000 a year that is $32,400 on one product. Each country's bar is the same light, every made part and the assembly priced again on that country's wages, machine rates and energy, then shipped and dutied into the US.

Per light, US dollars, at the duty in force on the estimate date. Mexico enters duty-free under USMCA, assuming the light meets its rules of origin. Batteries and fasteners held at their bought price.

Mexico$12.28 + $0.54$12.82
India$10.06 + $3.04$13.10
Vietnam$10.00 + $3.28$13.28
Thailand$10.52 + $3.37$13.89
Malaysia$10.94 + $3.16$14.10
China$11.00 + $3.44$14.44
United States$21.80 + $0.08$21.88
Germany$22.81 + $2.96$25.77
Made, assembled and packedFreight and US duty

One part: the aluminium housing

The housing from the home page, 500 a year in lots of 100, priced again in each country and delivered to the US.

Made inAt the factoryDelivered
United Statesfreight $0.46, no duty$18.96$19.42
Chinafreight $1.62, duty $5.25 (77.5%)$6.80$13.68
Mexicofreight $4.42, duty $4.32 (50%)$8.67$17.40

An all-aluminium part pays the 50% US aluminium tariff even from Mexico; from China it adds to the China tariffs. Mexico's freight includes $1.15 a part for the customs entry on each lot.

When the supplier pushes back.

The usual reasons a price goes up each map to a line in Diogenes you can open, check and change, in front of the supplier if you like.

Material went up.See the metal or resin price it used, the index it came from and its date. Re-cost on this month's price.
The shop rate is higher than that.See the hourly rate a shop would quote for the job, and what is inside it. For the housing on the home page: $41/hr with a robot on two shifts, $83/hr with an operator at the machine, $92/hr on one shift. Ask which shop you are paying for.
The cycle is longer than you think.See the machine and the cycle split into roughing, finishing, holes, tool changes and moves.
The tooling costs more.See the mould or die, what it costs and how it spreads over your volume.
It has to be made here.Price it in another country and compare the landed cost, freight and duty included.

Check what you already pay, across every part.

For a category review or a cost-down programme, the same engine runs across your spend.

Take a spend file: 300 parts, 3,600 invoice lines over three years, 14 suppliers. Diogenes imports it in about 1.4 s. The supplier index then shows how far each supplier's prices have moved since October 2023, weighted by what you spend with them, and how much of that is beyond the trend of the parts they make.

In machined parts, four suppliers moved with their category. Supplier C did not: +32% since October 2023, +21 pts beyond the category. Supplier C makes the sensor housing from the home page.

Machined parts, October 2023 to July 2026. The category moved +11%, spend-weighted.
SupplierSamplePrice changeBeyond its category
Supplier A+8%-3 pts
Supplier B+7%-5 pts
Supplier C+32%+21 pts
Supplier D+11%0 pts
Supplier E+8%-3 pts
Sample paid price of the housing against its real should-cost, both 100 in October 2023 100 110 120 130 2024 2025 2026 133 118
Paid for the housingSampleShould-cost of the housing, from Diogenes
Both lines start at 100 in October 2023. The paid price steps up each January, when Supplier C's price letter arrives, and ends at 133. The should-cost is the housing priced again month by month on that month's aluminium price, wages and machine prices, and ends at 118. The space between the lines is the part of the increase that those costs do not account for: the question to take into the next meeting with Supplier C.

The spend file, the suppliers and the paid prices are made-up sample data. The should-cost line is the real housing, as Diogenes prices it.

Your spend, next to should-cost

Import a purchase-order export: every part is in, with its price history, by supplier and by category. Should-cost appears next to a part once it has a 3D file or typed specs, and you tell Diogenes once that the invoice part number and the costed part are the same part.

Duty audit

Diogenes works out the duty each part should carry from its HTS line and country, and lists where what you paid does not match.

Freight and lot-size audits

The same check for the freight you are charged and for order sizes that push the unit price up. On the 3,600-line file, the index and each audit open in 1.0 s or less.

A negotiation pack

Print a one-page summary or a full dossier with the country comparison, ready for the supplier meeting.

Why did the price move?

Each estimate keeps its history, so you can see which input changed: metal, wages, energy, freight or duty.

Your files stay on your computer

Spend files, drawings and prices stay on your machine; it goes online just for public rate updates and part-number price lookups. Diogenes is installed software, not a website.

See it cost a part like yours.

A 30-minute video call. Bring a drawing to show on screen, or describe the part in a few words. Nothing needs to be sent to me.

The sample is the housing from the home page, as the app exports it. Or write to me directly: [email protected]

  1. A call. I cost a part like yours, live, from a few facts (material, size, volume, country) and open every line while you ask questions.
  2. A trial on your computer. You install Diogenes and cost your own drawings. They stay on your machine.
  3. Then you decide. Put Diogenes' prices next to what you pay your suppliers today, and decide whether it's worth a license.

Rather have it done for you?

I can tear down your product, cost every part in Diogenes and hand you the report: what each part should cost, how it is made, where its price comes from, and which suppliers are furthest from it. Then I help you build the negotiation plan: which parts to take up and in what order, what to ask each supplier, and the numbers to bring to the table.

Ask about a teardown and report