Technical Cost of axle swivel pins and bushes

[barefootin]

Has anyone had to replace their axle swivel pins and bushes? Both rear suspension parts have come up on my MOT as advisories (told the garage to pre-MOT the car and I would have got them done before the MOT - but they put it through and now I carry this and an oil leak (they couldn't see any drips)...)

Just curious of the cost and any other suspension issues. Suspect mine have gone due to excessive pot holes which are lethal in the 500L...