What version is this Blackjax? Standard installation cost if you brought your own unit is RM180. Plus RM900 for your unit, total cost would be RM1,080.
An authorised Clifford supplier told me a new Blackjax 5 with 12 months warranty costs RM1,000, installation included.
Just to let you know, maybe you can reduce your price to make it attractive for potential buyers, considering how much warranty it is left.