At £70,000 up to £90,000 a pop according to the article I doubt there will be many takers. However the RHD Australian Army spec cars which will be smaller engined basic spec turbo diesels I expect would make an interesting second hand buy.
At the moment, there's little to choose from. There's 2 RHD 2006's on autotrader for £85k and £89k. Both are LHD conversions with a supercar price tag.
On the proposed new pricing - at £70k , a used RHD could be mid to late £30k in 3 years.