Some places to check out:

1. Amadeus Violin Shop (PJ Section 14): https://amadeusviolinshop.com.my/contact-us/

2. Tiqin Musical Instruments (Kota Damansara): https://www.facebook.com/TiQin-Musical-inst...78803928874742/

3. Euro Music (Jalan Imbi): https://www.facebook.com/euromusicmy/

I would recommend a minimum of RM1500 for a good quality beginner's cello.