from Barleycorn Concertinas
The cheapest anglo concertina is undoubtedly the 20 key because of its limitations. A Lachenal brass-reeded 20 key would be £250+, a good steel-reeded one with mahogany ends £300+, a rosewood ended one £400+. (In all anglo models, Jones versions will probably cost less than Lachenals). (prices £sterling at July 2009)
The mahogany ended 30 key concertina would be from £650 with brass reeds and from £1000+ with steel reeds (26 keys and 28 keys slightly less). The favourite Lachenal 30 key rosewood would begin at £1800 (most would be £2000+) depending on quality. Metal ended ones tend to cost more but the cheapest metal end - with the crude fretwork and the metal going right to the ends - would probably be less.
In the £2000 - £3000 range you would have the better rosewood Lachenals, the better metal-ended Lachenals and the John Connor rebuilds which are exclusive to Barleycorn. Connor takes vintage reeds which we supply and produces a totally new 30 key Anglo concertina which we sell - with case - for £2500. We have a similar instrument - The Phoenix - made by the Concertina Connection in the USA. It is a top quality new instrument made with the best vintage reeds and will be in the £3750 - £4000 price range. We work closely with Wim Wakker at the Concertina Connection and recommend his repairs and products.
You would expect to pay £5000+ for a good old Crabb and £6000+ for any decent old Wheatstone or Jeffries concertina. (prices £sterling at July 2009)