I need to replace the muffler on my Accord. My local independent
Honda/Acura shop says they can do the standard "bolt-on"
Honda muffler, but it would cost $250 installed.

Does their term "bolt-on" mean the muffler could be replaced by a
normal handy human being who does not have welding equipment, but
who could order the part from one of the online parts houses?

Or, is there any particular reason not to just use one of the
aftermarket muffler shops at perhaps $100?