You could always try one of the Kitfox or Rans models.
Price (as usual) is dependant on fit and engine, but Rotax 503's can be had for £10K, 582's for around £15K and four stroke versions for around £18-£20K.
You can get taildragger or nosewheel with the RANS and both RANS and KITFOX can be operated 'cheaply' (as if any flying is cheap)