A company incurred the following expenditure during the year: 
                                                                                                  $'000  $'000
 Licence to operate in business sector for 10 years from
 January 2010                                                                                        200
 
 Costs incurred in planning a website for a new product                         20
 The website will be set up in 2011
 
 Purchase of 300 personal computers on 1 July 2010 
 (three-year useful life).  Total cost:
 300 PCs (excluding operating system)                                       240
 Windows operating system for each unit (licence for 300 PCs)  30
 Microsoft Office software for each unit (licence for 300 PCs)      24
                                                                                                    294
 
Induction training for new staff                                                    30

The company owns the rights to a popular range of books, which it purchased from another entity for $90,000 a few years ago. The rights were not amortised as they have been attributed an indefinite useful life. The books are still very popular so no impairment losses have been necessary and it was valued by an independent valuer at $140,000 at the year- ended 31 December 2010.

The company's policy is to use the revaluation model for its intangible assets where a market valuation is available and permitted.

Determine the carrying amount of intangible assets at the end of the year 31 December 2010 (insofar as the information permits).