Don't know the fridge but if it needs regassing then it has a leak and
depending on what is leaking it may not be a viable repair.
Also if the fridge doesn't work many will say it needs regassing, it may
it may not. Might be an electrical fault, could be a faulty compressor etc,
if you don't know exactly what the problem is and the expected repair
bill I would suggest you steer clear of it.