NR200 requires all SFF components, mini ITX mobo and SFX power supply which will all thousands to the budget and still you will have extremely limited options on motherboard.
While Sama SM01 is just a little bigger while allowing more mainstream components like microATX mobo and regular sized ATX PSU which saves a ton of money.
SFF parts are still very costly and available is rare in India, although it is improving.
Red - Asus P201
Yellow - Antec NX200M
Green - Sama SM01 / Zeb Woodan / Galax REV-03 (micro ATX + ATX PSU)
Blue - CMNR200P (mini ITX + SFX PSU)
https://comparesizes.com/comparison...-Woodan-Galax-REV03-vs-CM-NR200/1685603327965