This isn't a huge issue, the first registration is relatively straightforward, the Land registry have already state guaranteed the free-hold by issuing the vesting certificate. You will probably have to get a map drawn. Ask your solicitor what extra cost is involved. The solicitor may charge you extra for the application itself and the land registry has a fee for the registration. If you were buying a land registry title with a mortgage the land registry fees alone would be over €700, the cost of the first registration would probably be comparable