When I checked their one way pricing it is similar to our pricing plus a brokers commission, but the day returns, 1 - 4 overnights are 30%+ more than our prices even from routes to and from Cologne -
It's obviously a model based on avoiding brokers commission and based on loaded sectors. If they are willing to guarantee availability they may take some Bravo / Diamond Jet clients from Netjets, but I'd be surprised if they could run more than 1-4 aircraft to any great level of utilisation.
Given the dire performance of Claret's investment portfolio, I don't see this working, the cash injections would be big and monthly if they even take delivery of 10% of the alleged orders.