Follow up question to moving parents from TX to AZ: any experience with those "Senior Relocation Services?"

I've spoken with my mother and the family that will be near her if/when my parents move from near me to AZ. To review, Dad has moderate Alzheimer's and mom has degenerative neuropathy and is mentally pretty sharp. It looks crazy externally, but might actually be the best. Current question: has anyone used those senior relocation services that provide guidance and even "concierge" kind of help, arranging estate sales for downsizing, shipping stuff to family members, packing/moving/and unpacking/setting up new home etc etc? Sounds awesome, sounds expensive. Thoughts?