What ERP Really Costs a 20-Person Shop
The rule of thumb is 1 to 3% of revenue over five years. Here's the real math for a small shop, the failure rate nobody quotes, and when ERP is still the right call.
Full ERP runs 1 to 3% of revenue over five years. A 20-person shop typically pays $50,000 to $75,000 all-in, and more than 70% of ERP projects miss their goals. Below that threshold, flat-priced single-workflow tools cover most of what a small shop needs without the implementation project.
ERP pricing pages quote a seat price. The real number is the all-in five-year cost: 1 to 3% of revenue, which for a typical 20-person shop lands at $50,000 to $75,000. The seat price is just the visible part: implementation, data migration, training, customization, and the productivity dip while the shop relearns its own workflows make up the rest.
What the job-shop ERPs actually charge
JobBOSS², the dominant job-shop ERP, runs $85 to $150 per user per month plus $5,000 to $15,000 implementation; a 5-user first year lands around $12,000 to $20,000. ProShop starts near $500 to $715 a month, quote-based. Fulcrum starts around $800 a month. Katana's aggressive re-pricing (users reported increases over 500%) shows the other risk: on someone else's platform, your price is their decision.
The number nobody puts on the pricing page
More than 70% of ERP projects miss their goals. Not because the software is broken, but because a full ERP forces every workflow in the shop to change at once, during production, with the same people who run the floor doing the migrating. Forums are full of shops that describe their ERP with the enthusiasm of a root canal: "used it 16 years, would not recommend."
What a small shop actually needs
Strip it down and most 5-to-50-person shops need five things: quotes out fast, an honest schedule, live job status, records that pass an audit, and costs that tell the truth. Every one of those is a single workflow, and single workflows don't need an ERP: they need a tool that does one job at $50 to $500 a month flat, live the same week. That's the shape CitrusWeb builds: Works for the floor, custom AI for the workflow that's unique to you, priced per shop, never per seat. If quoting is the bleeding edge, start with how fast a machine shop should quote.
When ERP is still the right call
Honesty cuts both ways: if you're past roughly 100 people, running multi-site inventory and MRP, or your prime contractor demands it, a real ERP earns its cost, and tools like ours should integrate with it rather than replace it. The mistake isn't buying ERP. It's buying it because it seemed like the only door, five years before you needed it.