Based on my conversations with an ex local MD 3 years ago, they need to have £15k across a car. I was shocked but the breakdown was not madness; workshop prep to MD standard £2-5k even for a car recently serviced by them, £3k warranty, £3k VAT on gross profit, sales & sales manager commission, discount on cash offer and usually a small profit to pay for the multi million pound investment Ferrari/Maserati require for you to be able to play the game. They really wanted to retail my old QPV GTS for £50k but could not go above £35k to write a cheque. £15k may work across a 3 year old 488, but not Maseratis so the reality is probably they saw your car at £50-£55k retail.