I'm sorry but no, blind bidding didn't help at all. The buyers were smart enough to figure out that they should always underbid when they bought items.

Items that sold fast, like RR hairpins, food and arrows fluctuated heavily in price between weekdays (when there are few buyers) to the weekends (when there are a lot of buyers). The money entering and exiting the game was not significant enough to have major effects over the course of a few days or a week.

Deflation and inflation in the game will happen regardless of whether we use a blind bid, true bid, buyout, bazaars, or whatever. That is a tenet of a free market. What buyout has over blind bid is that both as a seller and as a buyer, I have to do less guesswork or homework when I want to use the market. Neither of them provide any protection against supply/demand fluctuations or against overall inflation/deflation.