€60,000 sounds a bit much, it works out at over €300 per passenger...
You'll never do away with check-in desks entirely. Aside from the fact that they'll be needed to take the luggage of internet passengers, you'll also find that when people are away from home that they won't always have internet access.
Eventually, you may be able to move to mobile phone based check in and a virtual boarding card that arrives as a text message, but that will be a long time off yet.