Just make sure there is no additional cost.
Last time, a friend told me that he bought the aircon very cheap at small electronic shop, but during the installation, the installation guy decided the location for the FCU (very near to the compressor) and when my friend asked the FCU to be installed in the centre (and facing to the bed), the guys ask for $100 for every 1 metre. At the end of the day, he needs to pay few hundreds dollar more.
Hi, I think you kena ripped lah. Complain to the shop that you bought lah.