For a cheap toaster, yes, I wouldn’t bother either unless it was the best toaster ever. But for more expensive things, like an air fryer, power tools, vacuums, any thing with sentimental value… it is a great skill to learn how to do safely.
Just replacing a broken plug on an extension cord can save you big, the good cords are going for $20+, a new plug is closer to $2 (although replacing the plug removes its safety for outdoor use as it’s no longer a water tight seal).
Its usually cheaper to replace the damaged part than the whole unit.