Stop Looking at the Unit Price. The LRS-150-24 is Probably Cheaper in the Long Run Than the No-Name Alternative.

I manage procurement for a mid-sized lighting system integrator. We go through a lot of power supplies. The biggest mistake I see—and I've seen it on six-figure projects—is buying based on the lowest upfront number. If you're looking at a Mean Well 24V 20A power supply model, the sticker price is going to be higher than a generic option. But after tracking our spending for 6 years, I can tell you this: the Mean Well unit almost always wins on total cost. Here's why, and where the gotchas are.

How I Tracked This: $180,000 in Spending and 8 Vendor Comparisons

I became a data nerd about this after a bad experience back in Q1 2022. We'd spec'd a cheap supply for a run of architectural spotlight shortcut fixtures (think those tight, recessed ceiling lights). We saved maybe $4 per unit. Six months later, the failure rate was 12%. The cost of the truck rolls, the emergency re-orders, and the angry client call more than wiped out any upfront savings. After that, I built a TCO (Total Cost of Ownership) spreadsheet.

We compared 8 different vendors over a 3-month period. I tracked everything: unit cost, shipping, failure rates over 2 years, warranty claim hassle, and even the time our engineers spent on tech support calls for power supplies with confusing datasheets. The 24V power supplies from Mean Well (like the LRS-150-24 and the PSC-100 series) consistently had the lowest TCO in our analysis.

The Specific Numbers From Our Last Audit

For our standard 24V 20A power supply (which we use for LED tape and some dimmable driver applications), Vendor A (Mean Well) quoted $38.50 per unit. Vendor B quoted $22.00. You get the appeal.

But when I ran the numbers on a typical order of 50 units:

  • Vendor B: $1,100 + $150 shipping + estimated 8% failure in the first year (based on our experience and industry benchmarks) = hidden replacement cost of ~$176 + engineering time = roughly $1,450 total.
  • Vendor A (Mean Well): $1,925 + $0 shipping (from our distributor) + <1% failure rate (we've only had 2 units fail in 5 years) = roughly $1,935 total.

The Mean Well is more expensive by almost $500 on the order. But if the cheaper units fail, we're not just losing the part. We're losing the labor, the timeline, and the trust. That $1,450 from Vendor B can quickly balloon when a failed power supply in a teardrop chandelier installation means sending a team back to a client's house. Suddenly, the Mean Well looks like the budget-friendly option.

The "Small Client" Trap: Why Cheap Power Supplies Hurt You Most on Small Projects

I've worked with a lot of small B2B clients—lighting designers, makers of custom monitor light bars, electricians doing a single shop fit-out. They're often the most price-sensitive, and they sometimes get pushed toward the absolute cheapest power supply. It's a trap.

When I was starting out, I spec'd a cheap supply for a spotlight shortcut project for a small cafe. It failed. The cost to fix it (including my time and the bad reputation) meant I made almost nothing on the job. That lesson stuck. The vendors who treated my $200 orders seriously back then (and recommended Mean Well, even though they made less margin) are the ones I use for $20,000 orders today. Small doesn't mean unimportant. It means you have less margin for error. The reliability of a Mean Well driver is a small upfront premium for big insurance against a job-killing failure.

Why It's Not Always the Answer: A Few Things I've Learned

Look, I'm not saying Mean Well is the only option. I can only speak to our context: lighting and control systems with moderate temperature demands. If you're doing a high-volume, low-cost consumer product where failure is an annoyance, not a catastrophe, maybe the cheap supply works. I honestly can't calculate that.

Also, I've never fully understood why their 3-in-1 dimming range (resistor, PWM, 1-10V) is so robust. It just works for us. My hypothesis is their tuning resistors are better specified. But for our dimmable driver applications, it's been a lifesaver. We don't have to stock three different EOL versions.

At the end of the day, if you're a small shop or a B2B integrator, don't let the $38.50 price tag scare you. Compare the total cost of the project, including the headache of a fix. I've found Mean Well's 24V 20A model, in the long run, is often the cheaper purchase.