BvD couldn't remember the price of a box of GS cookies-- and yet she was out helping her daughter sell them. OTH, Keith Stone said he thought $6 was a high cover-- he got into Dad's free, as a friend of the band. We don't know if it was a real ladies' nite, or if they avoided the cover by going early. BvD went twice in eight days, that we know and bought drinks. If you start adding it up, it can look extravagant.
See, I cut her a break for the momentary statement that they cost $4 instead of $3 because she was testifying at a murder trial in which her daughter is the deceased. I think we all say statements then correct them, which she did.
As to Dad's. She testified to being there about 4 times in about 2 years or so. I'm going by memory so may be off precisely, but she was no regular. And if you are inclined to not believe her, then I would guess employees of the establishment would be contradicting her. I don't believe we'll be seeing that testimony.