Factors:-

1) Distance

2) Truck size 1 Tonne, 3 Tonne, etc

3) Number of helpers you require

4) What floor you both the apartments are at as some items might need to use the stairs

5) What sort of packing you desire, like bubble wrap everything, soft insert truck for soft furniture

6) Timing of the work, can they work weekends or do you need to work outside office hours, etc

I sincerely advise you go for for a proper moving company although they cost good money otherwise high chance your items will have some scratches and what not.

A cheap mover is those roadside sign saying 3 Ton Lorry dgn 3 pekerja RM450. Cheap but only for goods that your don't mind having some scratches.

Also consider that some furniture no matter how nicely transported might be damaged beyond use. Such as those MDF furniture or DIY IKEA type usually not strong enough, unless handled by professionals.