A page in EVO costs 4,500 GBP. One magazine and one page will not be enough. Furthermore, so far about 500 Aero 8s have been sold but not in UK only. How many countries? How many magazines? I don't know. IMHO it would cost a fortune.
I think the mag is distributed in a number of countries if not the whole world, and yes its a gamble, but if it resulted in a couple extra sales from it, it would have been worthwhile.
There are plenty of people who could afford an Aero, but probably were not aware of it, if they had £70k in their pocket, they would have walk straight into some prestige marque dealers, and would never thought of Morgan, hence the need for certain amount of marketing and make potential buyers aware that there are other alternatives....