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A couple at G4Uhttps://www.guitars4you.co.uk/guitars/5854-prs-jm-silver-sky-horizon-rd-used-2017/https://www.guitars4you.co.uk/guitars/5886-prs-jm-silver-sky-orion-green/
One of those is sub 2k
Cash Converters are listing a dodgem blue one at the moment, here.
Have you seen the B-stock maple board example at Music Street? Lacquer shrinkage on the body shows the lines between the three pieces of timber, but that seems to be the only flaw.They did have it listed as B-stock originally, but its moved to their second hand page now, £1,899 - https://musicstreet.co.uk/collections/used-guitars-uk/products/prs-silver-sky-john-mayer-signature-model-midnight-rose-b-stock
These are great