Try these guys as like us have been doing weddings for about 5 years.
http://kombiweddings.com/
Excessive costs, in thing, we are into our 6th season & our prices are relevant to the market.
Insurance, engineers certificates, maintenance our cars are service by (ministry of transport approved) vw mechanic 4/5 times a season each, supplies of beverages each wedding & fuel costs not to forget advertising & business cards pamphlets.
Register of business name & internet costs, tax, etc etc etc did I mention insurance personal, private & insurance cover to access council/government land, each cover is for $20,000,000.
Only cowboys don't have to outlay but no paperwork on hand & the fine is about $150,000.