Here in New Zealand the B12 holds its price very well. Going through the latest copy of a national motorcycle listings mag the B12 is as popular as it always was.
Examples: 1999 B12 37,000kms $8,000
2001 B12 18,750kms $9,995
2000 B12s 22,000kms $11,500
and the list goes on. All of these bikes had good service records and various bling to sweeten the deal. These were all private sales with dealers selling similar items for around $1,000 to $1,500 more.