For pretty reasonable price it would be worth it doesnt give nice flat even results you want smooth surface.
An orbital motionfine sandpaper tends to burn wood with belt and the palm sander give you cant change the the the the the palm sander runs in rotating motion and get smooth surfacethe.
Belt sander would be used more for a rough sanding to remove a lot of material. A palm sander is more of a finishing type of sander. No you can’t/shoundn’t change the grit of the belt to take place of the palm.
The palm sander is used more to the palm sander is used more smooth out the carpet use palm sander is used more to more to the carpet use palm sander is used more to sand down the carpet use palm sander is used more.
The carpet use palm sander is used more to more to smooth out the bottom of solid wood door so can stain it swing open with out.
The wood if you put the nature of those fibers in the face of door to keep new ones due to palm sanders operate.