price depend on who is the installer.

a bit off topic, but lets think logically,

if wan learn western style, buy ur own equipment and only get labour from installer, then the installer should charge follow western style too...

in europe, a normal installer charge 40 euro/hour and a good 1 charge 90 euro/hour..only labour not included any material.

in malaysia, charge by per hour get fxxk by customer, then install a headunit (if tricky) may use up to 2 hour..so customer wan them charge rm30...reasonable? i dont think so.

everyone need to earn a living, you can get a product at lower price / free from old car is your problem...but not installer problem he must charge cheap to accommodate your product price.

1 day when you own a fried kueytiaw store and i take kueytiaw ask you fry only...how much u will charge? rm2?