At what point do the anticipated maintenance/running costs of a 140 make feasible the contemplation of a 12-15 year old Bently Turbo R?

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6118&item=4516968434&rd=1

__________________
Anders

1995 E300
2015 VW TDI Sportwagen 15K
1977 240D (197K)
2002 Subaru Legacy L Wagon (115k) (Wife's)
Gone but not forgotten:
2005 Buick LeSabre
1998 C230
1984 300D
1983 240D
1981 300SD
1974 240D
1974 Fiat 124 Spider
1968 Triumph TR250