> "In terms of efficiency, the solar cells are currently showing around a 2-2.5 per cent power conversion rate" [1]

Since you can probably get 250-350 watts of sunlight (avg) per square meter, it means 1 sq m generates 5 to 8.75 watts. Which is 0.5 to 0.875 watts per dollar (or $1.14-$2 per watt).

I don't think that's cheaper than the current offerings, especially if you don't consider these printed panels take 10X more space. Also the lifespan isn't known.

But consider that the price of these new panels will likely fall, if mass-produced.

[1]: https://cleantechnica.com/2017/05/17/researchers-australias-...

EDIT:

Other people say it's $0.40 per watt. [2]

[2]: http://www.thefifthestate.com.au/energy-lead/energy/cheap-an...