I don't think it went any lower. I only missed one set of flash sales and community choice because I forgot to check it at work that night. Unless it was one of those 8 titles for those 8 hours, then no it never went lower.
I noticed Rust never went on sale at all. That was the only one I had on my wish list that never went on sale at all during this. I removed it from list and will not be buying it period, sale or not. Maybe if it goes down to .99 or 1.99 I would but I doubt it with all the bugs and bad reviews I have read lately. Coupled with them not agreeing to put it on sale even 10%, I will most likely pass.