I am sorry.
I say you are just meeting some really shady families because what they are doing is like a bait and switch trick to me.
I think they want you to come to meet them, esp. their absolutely adorable child and fall in love with him/her. They then think you will be so enamored by this perfect little angelic cherub, that you will be willing to compromise your salary just to be in his/her presence all day.
These delusional folks need to step back into reality.
I wish Care.com had a filter for these stupid people, but unfortunately the website only is interested in making a pretty penny so they could care less about anything else.
Every time I see that smiling "Sheila" the CEO of Care.com on T.V., I cringe as I think of all the caregivers she is screwing over on a daily basis. What a fraud.