I can tell you from my personal experience, Jennifer came home on a ventilator two and a half months ago. It was definitely more than i can do alone. Jen has Bulbar ALS, had a trache in December and we have twin 3 year olds.
We pay for Nurse care 10p to 10a, to the tune of $45 an hour, this may be less in areas outside of Chicago but is standard around here from my research. We were denied Medicaid because the Ventilator was an "option to prolong life", what ever that means. So we pay out of pocket. We moved in with her sister who cares for Jen and the twins during the day with the help of MANY other family members, and i can work.
She needs oral suctioning every 10 minutes (give or take), trache suctioning 4-5 times a day, all hygiene related activities, feedings, etc. Not sure what your PALS needs are but Jen is fairly disabled.
With all that said, it is worth it every night I watch the kids give her a kiss and tell her they love her.