As ever something is worth what someone else is willing to pay.
What controllers? There are two broad classes (with analogue sticks and without) for the PS1, without tending to mean an older model and also less useful.
There are millions of them sold around the world, don't think you will have a particularly dry local supply either (enough will have floated across the border). Even more so if you count the PS2 and other backwards compatible options. Emulation is also a thing people do, though still a bit fiddly compared to some things where you set up a controller and load a ROM.
They are an optical drive based system so lasers being iffy is a common enough problem with few particularly nice fixes (no easy replacements with most...