評分: 5 / 5 顆星

作者：JV 於 Feb. 22, 2011 發佈 · 永久網址

I found this in extension Google Chrome first. I liked it so much I added it to my Firefox. Has saved me quite a bit of money so far, without me needing to think about it. @river_dacota I prefer the alert style easier to notice (for me).