LIGHT MOVERS,can i make em myself

i dont know how they work and in my country i dont have anything like it in the store,is it possible to make a light mover for 5 cooltube reflectors

It is possible yes, but if you don't know how they work you probably will not be able to make them.... I'm sure you can order them online somewhere. The time and energy you would waste learning how they work and how to build them from whatever materials you could find would be more costly than just buying some that are already available.

how heavy are they,if i order them online the shiping could cost more that the movers

A BBQ rotisserie motor is a good choice to base a design on.