Wow, Labor RM1900 for 102sf?? RM10/sf without tiles is already quite ok. RM19 should have included good quality tiles ald plus water proofing.
1. Is it floor plus floor to ceiling?
2. Do you hack wall?
3. Lay new water piping?
4. Water proof?

Usually labor cost is ald included materials like cement, the adhesive mixture, sand etc... Material RM1000? U mean material = tiles?? If 102, only need 51 pcs 1x2. The most is plus 20% for wastage. Your concrete top will not be that big as well.

2x2 tiles RM30/pcs what brand? MLM, Niro, Feruni??

Seems very expensive to me. But depends on you lo.

you're being taken for a ride.
you can look around for any tile warehouse having sale and buy from them.
they will hook you up with their contractors.

since you are in jb, you can try BMS at permas or the one near jpj, actually you can buy the tiles your self and just engage the contractor for their labor. they also can reckon you the contractors too.