Wojtowicz Limited was involved in a mining exploration business. It commenced a project to design more efficient gold detecting equipment. The following expenditures occurred during the financial year ended 2013: researchers salary $5000; research consumables $3000; re-development of the detecting equipment $4000; final adjustments to the detecting equipment $2500. The amount to be capitalised by this company as an intangible asset, for the 2013 financial year, is: