Yeah, when I first started using GarageSale, that was one of the big ones I'd forget to change.
Also, I'd duplicate a listing for shoes or something and then fill it out for a tie and forget to change shipping weight. I'd wonder why I wasn't getting bids and then notice that the shipping was calculating for 4 lbs or whatever. I have like 10 templates set up now for like shirt, shoes, suit, coat, etc. and then separate ones for BIN items. A lot fewer mistakes since I started doing that.
Yeah, that's what I'm doing too. I've got templates for dress shirts, dress pants, jeans, cycling clothing, hiking clothes (basically, each category I've listed today!). Seems to be getting pretty smooth going through the process! I also shipped 12 items today, so business is certainly picking up!