I need to purchase hearing aids for my mom and am completely confused. Can anyone give us advice?

Background:
My mom had chemotherapy which left her prematurely very hard of hearing. She needs hearing aids and has been cutting out every ad she sees in the newspaper wanting me to take her to get them.

I did purchase her one set as temporaries which have been helpful but it is time to find her a good pair that are in-ear as the ones she have are over the ear and bother her.

The issue? None of these hearing aid companies seem regulated. They come off as used- car salesmen and are really way too expensive to simply believe an ad and buy blindly. Currently I am looking at a minimum of $795 per ear which is not chump change.

I WILL be taking her to an Audiologist but was really hoping I could get input from you guys on all this.

Please help me guys. ANY advice is appreciated highly.