If you’ve ever had to source an Allen-Bradley PLC on a tight deadline, you know the feeling. The budget is set, the spec is locked, and then the quote comes in—higher than expected. I’ve been there. Over the past six years managing procurement for a medium-sized systems integrator, I’ve tracked every order, negotiated with dozens of distributors, and learned the hard way that the cheapest quote is rarely the cheapest in the end.
Here are the questions I wish I’d asked from day one.
1. Is the list price the real price?
Short answer: No.
When I first started, I assumed the sticker price was the price. Three budget overruns later, I learned about the gap between list and net. Distributors have margin built in, and they’re often willing to negotiate—especially if you’re a repeat buyer or bundling multiple items.
Here’s something vendors won’t tell you: the first quote is rarely the final price for ongoing relationships. There’s usually room for negotiation once you’ve proven you’re a reliable customer.
In Q2 2024, I compared quotes across four distributors for a ControlLogix 1756-L83E CPU. The list price was $4,200. Quotes ranged from $3,800 to $4,150. I went with the $3,800 quote, but the real savings came from the relationship—subsequent orders got faster turnaround and priority support.
2. What’s the total cost of ownership (TCO)?
The base price is just the beginning.
When I audited our 2023 spending, I found that 22% of our PLC project costs came from things other than the CPU itself. Things like:
- Programming software licenses (RSLogix 5000 / Studio 5000)
- Training for your team (especially on newer firmware versions)
- Spare modules and rack inventory
- Shipping and handling (especially for rush orders)
My initial approach to cost analysis was completely wrong. I thought the best deal was the one with the lowest CPU price. But $200 saved on the CPU meant nothing if we spent $600 on a rush shipping fee because we didn’t plan ahead.
The lesson: calculate TCO, not just unit price. Factor in training, software, and the potential cost of downtime if you get a unit that’s hard to configure without support.
3. When is it worth paying for a faster turnaround?
When missing the deadline costs more than the rush fee.
In March 2024, we needed a 1756-EN2TR module for a factory line restart. The standard lead time was 10 business days. The line was idle. Every day of downtime cost the client $4,500.
We paid $350 extra for a 3-day rush delivery. The alternative—waiting 10 days—would have cost $31,500 in lost production. That’s not even a close call.
What most people don’t realize is that 'standard turnaround' often includes buffer time that vendors use to manage their production queue. It’s not necessarily how long your order takes. But when you need certainty, the rush fee is insurance against a much bigger loss.
4. Are you comparing apples to apples on warranties?
Not all warranties are created equal.
I once compared two quotes for a MicroLogix 1400. Vendor A offered a 1-year warranty. Vendor B offered 3 years. B’s price was 8% higher. But the warranty difference alone justified the premium—one module failure outside year 1 would cost more than the 8% spread.
Check for:
- Standard warranty duration (Allen-Bradley typically offers 1–2 years from date of manufacture)
- Return and replacement policies
- Advanced replacement options (some distributors will ship a replacement before receiving your faulty unit)
That 'cheap' option can become very expensive when a module fails 18 months in and you’re out of warranty.
5. What’s the real cost of training?
If you’re new to the platform, budget for it.
We hired a technician who knew Siemens S7 inside out. He’d never touched Rockwell software. We assumed he’d pick it up. He didn’t. Not quickly, anyway.
After two weeks of fumbling through Studio 5000 (and one near-miss that would have crashed a production line), we enrolled him in a 3-day certified training course. Cost: $1,800. But it paid for itself in the first month—faster troubleshooting, fewer programming errors, and less time spent on tech support calls.
Bottom line: If your team doesn’t already know the Rockwell ecosystem, factor training into your procurement budget. It’s a one-time cost that pays ongoing dividends.
6. Does it pay to buy from a local distributor vs. online?
Depends on your situation.
I’ve done both. Here’s my rule of thumb:
- Local distributor: Better for relationships, emergency support, and negotiating bundled pricing on training or software. But you might pay a 5–10% premium on hardware.
- Online / national distributor (e.g., 48 Hour Print for printed materials, though they don’t sell PLCs): Often better pricing on hardware, but you lose the personal relationship and emergency support.
For a planned project with no time pressure, I buy online. For anything mission-critical or urgent, I pay the premium for a local relationship. It’s a deal-breaker not to have someone you can call on a Saturday.
7. How do you verify you’re getting genuine Allen-Bradley hardware?
Counterfeit PLCs are a real problem.
In 2022, a colleague bought a 1756-IF8 module from an unverified third-party seller. It looked real. It even had a serial number sticker. But six months in, it failed catastrophically—taking a sensor array down with it.
We later found out it was a refurbished unit passed off as new. The savings? About $150. The cost of the failure, including downtime and replacement? Over $5,000.
Only buy from authorized Rockwell Automation distributors or reputable resellers. Check serial numbers with Rockwell if you’re unsure. Trust me on this one.
That’s it. Seven questions. If you ask them before you buy, you’ll avoid the most common pitfalls. The goal isn’t to get the lowest price—it’s to get the right price for your situation.
