I'm also loking to buy a system 3 via credit card instalments. will prefer to buy an inverter. air-con, bracket, power point & piping will be needed to be inclusive of all-in pricing. do any of you have any honest guys?? went down to IMM today, very bad experience.. sales person very bad attitude, think I ask for fun (I wanted to sign till he said, this must upgrade, powerpoint must do, PUB inspection not included etc.... not professional & sales person even have black stain on teeth, how to concentrate when I keep looking at the permanent dirt???? Lousy service indeed!