Commercial toasters (and, I imagine, commercial electric kettles) are 'good' in the sense of being well-built and long-lasting. I've got a 1980s Dualit toaster which is essentially bomb-proof (the clockwork timer will eventually stop working but is easily replaced; even the elements can be readily changed out if they get damaged).
Of course, the downside is that new ones start at £150 or so. So it's difficult to make a financial case (as opposed to an aesthetic, or a principled one) over a £10 special from Tesco.
The problem with ‘commercial’ kitchen equipment is that most of it is just up branded domestic equipment.
When you do buy ‘commercial’ kitchen equipment you’ll notice lots of things that are just downright worse. Energy efficiency, safety features, and noise reduction are all things that are _way_ worse than with their domestic counterparts.
"Real" commercial kitchen equipment is often totally different.
Commercial fridges will stay cool even if their door is opened 20 times an hour. Commercial glass washers take a tenth of the time a home dishwasher takes. And if they're noisy, ugly and they need to be cleaned every day without fail, that's just normal commercial equipment.
Of course, the downside is that new ones start at £150 or so. So it's difficult to make a financial case (as opposed to an aesthetic, or a principled one) over a £10 special from Tesco.