Do not take EstiBot as a accurate tool to determine value. I seen many times domains that they valued for 0$, and sold for thousands. $4200 for this domain , is just not realistic.
The only problem with this domain is the first word. "Other". Why other babies? That word throws this domain a little off.
I'm afraid I have to agree with @coco77 and @jacoliobo on this one. One overlooked aspect of coming up with a good domain name for sale is that the name has to make sense. Based on your response are you implying that your domain name is based on Paul McCartney's song?