Lapidary Equipment Total Cost of Ownership Calculator
Turn the current purchase price you see at the retailer into a transparent ownership model using your own setup, maintenance, consumable, electricity, use-frequency and resale assumptions.
Choose equipment from the material and job first—not from the retailer first.
How do you calculate the real cost of lapidary equipment?
Start with purchase price and one-time setup, then add your own electricity, consumables and maintenance assumptions over the years you expect to own the machine. Subtract an estimated resale value only if you choose to model one, then divide by realistic use sessions. Comparing that cost per session with outsourcing can show whether ownership is economically justified.
The cheapest purchase can be expensive to own, and an expensive machine can still be irrational if it is rarely used.
Use the current purchase price you actually see at the retailer as the starting point, then enter only costs that apply to your own shop. Electricity is excluded unless you enter both machine draw and your electricity rate. Resale is excluded unless you choose a resale percentage.
Model ownership without fake precision
Select a product and enter your own operating assumptions.
The calculator will separate acquisition, recurring operating cost, modeled residual value and cost per session.
What the calculator includes—and what it refuses to invent
Purchase price
Enter the current price you see at the retailer. The model does not cache Amazon price or availability.
Current price in your controlOperating costs
Freight, electricity, consumables and maintenance vary too much to infer universally, so you control those fields.
No hidden assumptionsResale credit
Residual value is zero until you deliberately enter a percentage. The model never assumes a used-equipment market price.
Conservative defaultOutsource break-even
If you enter a comparable outside-service price, the tool estimates whether ownership can economically overtake outsourcing under your stated use.
Economics, not qualityDirect answers before you buy
Does the calculator include shipping automatically?
No. Freight can vary dramatically by machine, destination and service level, so it is a user-entered one-time setup cost.
Why is electricity zero by default?
Because rated electrical input and local electricity price vary. Enter the exact machine draw from its nameplate/manual and your own electricity rate if energy cost matters to the decision.
Does a lower cost per session mean a machine is better?
No. It means the ownership model is cheaper under the assumptions entered. Capacity, safety, quality of result, workflow fit and evidence still have to be evaluated separately.
Can I compare buying with paying someone else to cut or finish rocks?
Yes. Enter the comparable outsourcing cost per job. The tool estimates a break-even only when ownership has a lower modeled variable cost per job than outsourcing.
Check the source, model and buying conditions.
Manufacturer pages and manuals support the specifications identified in a guide. Check the exact model and current instructions before purchase; similarly named variants can differ.
A product card’s check date applies to that record. The page revision date does not mean every product was rechecked. Confirm current price, seller, package contents and availability on Amazon.
These guides use published information and editorial selection criteria. Hands-on testing is not claimed unless a guide describes the actual test.
Shopping cards show products with a direct Amazon purchase link. This limits the displayed selection; it is not a comprehensive market comparison. Use the tool-class guidance and current manufacturer instructions to assess other options.
- Gear Comparison Lab — source-verified catalog
- Consumables Planner
These references support product specifications or procedures, not independent proof of performance. Follow the instructions for the exact equipment you use.
Editorial method: read the Gear Review Methodology & Evidence Policy. Affiliate relationships: read the disclosure.