I'm in the process of changing mine - which were huge - for several reasons.
1.) You can't fit many into smaller flat rate boxes when you have big chunky packaging boxes...
2.) All my various accoutrements on my boxes arent cost effective
3.) If I start doing shows, it's almost impossible to do them the way I'm doing them now, with shred, box, riboon, charms etc.
4.) I'm selling 7 and 8 ounce bars for what people are charging for 4 oz. bars. Crazy talk, I know.
5.) White boxes show fingerprints.
I'm gonna do a standard soap box and label. Throw 'em in there, wham, bam, slap a label on...done. 4ish ounces.