This is crazy. I myself work for a large moving company and can advise that the info they have given you is not worth a cent.
Any person transferring their residence to Singapore may import used household effects duty-free, provided they
are the owner of the effects, have owned them for at least six months, and provide an undertaking not to sell them
within three months of arrival. Effects must arrive within six months of entry. A bill of lading and an inventory of
items are required.
Make sure that the movers do not list the video tapes on their inventory list. Also, if you have any bottles of "juice" which are already open, I suggest that you have them packed up and write " packing crew" on the box. This way, if customs do examine, you have the excuse that this carton was destined for the packing crew but loaded by mistake.
If you are in the UK, then send me your address and I will send you a very useful guide "Moving to Singapore".
Good luck 