When I got my new computer, I opted not to get the speakers. I had a set of Sony speakers including a big base unit that sits on the floor - that worked great. But then – then being too late -I discovered the Sony speakers had a special plug that wouldn't fit in the new HP.
I cut the wires on the speakers and, also, on a compatible plug we had. But the wires are too thin for my wire strippers to work and stripping them with a knife just made a mess. So I went to Fry's to get an replacement power cord that would work. While Fry's didn't have a cord that would work, they did have a power cord kit with a variety of ends, one of which would work with the Sony. Maybe.
The kit was for low wattage and I didn't know for sure if it would work with the speakers which were still at home. And, it cost 44 bucks. Three aisles over, new sets of speakers started at $28.95. Of course I had no idea if the speakers would be any good. I bought the third "upgrade" for $35.95 figuring they would be OK if not spectatular. They are.
It just became more work than I wanted to do to do the right thing.