Robot mopper and vaccum cleaner suggestion needed-gift for mother, please help.

Hi everyone I m looking for a robot vacuum cleaner and mopper, currently I am thinking of buying dreame D9, it is cheap as compared to other, and my budget is not that high. My mother is a clean freak, and she has also been fed up with the maids, so this is a must for her. Please help as early as possible, our maid might leave on the 3rd of this month, so I want to get one before that.