问CsQuery :在页面上查找价格

EN

(?:\$|\£)(\d+(?!\d*,\d)|\d{1,3}((, ?)\d{3}?)?(\3\d{3}?){0,4})(\.\d{1,2})?(?=[^\d,]|, (?!\d{3,})|$)

(?:\$|\£)      -- matches literal currency simbols. You can remove this
                  if you can't count on the presence of currency symbols,
                  but it's a great anchor if you can
(\d+           -- matches any number of digits
  (?!\d*,\d)      as long as not followed by comma digit
|
  \d{1,3}      -- otherwise matches betweein 1 and 3 digits
  (
    (, ?)      -- looks for a comma followed by a possible space
                  captures as \3
    \d{3}?)    -- followed by 3 digits
    ?          -- zero or one times
  (\3        -- looks for the same pattern of comma with or without space
    \d{3}?   -- followed by 3 digits
  ){0,4})    -- between 0 and 4 times, more on that below
(\.          -- literal period
  \d{1,2}      -- followed by one or two digits
)?           -- zero or one times (so, optional)
(?=[^\d,]|, (?!\d{3,})|$)

(?:\$|\£)(\d+(?!\d*,\d)|\d{1,3}((, ?)\d{3}?)?(\3\d{3}?){0,6})(\.\d{1,2})?(?=[^\d,]|, (?!\d{3,})|$)