GreatÂ that you have a project to get stuck into, If you consider the cost of Ipe and an approxinate cost of Â£12k-Â£14K plus vat for the whole project;Â to thenÂ reduce the sq m cost of Hardwood deck by even Â£10 per sq m would only save you Â£600.
First Grade S4S/E4E KD Random Length Ipe currently (Jan 2012) is between Â£60 and Â£80 plus vat per sq m
Do let you client know that they will all go silver eventually… or ask Thomas RathboneÂ to provide a quality Maintenance service to keep the colour.Â
I did write a blog about what decks cost here https://deckingnetwork.com/decking-advice/how-much-should-i-be-paying
Hope this helps