Just Googling Typhoon gives a cost of $140 million in 2015.
That immediately throws up questions.
Cost is easy but dates will differ. Currency £ € $ is another variable. Then legacy aircraft will have an historic cost that bears little direct comparison. This then comes to worth.
At $18m in 2003 you could probably buy a T1 on eBay for pocket money.
Incidentally my figure are from Googling. Try it.