It's confusing to compare the eBay seller's SSKI with yours. He offers 30 ml for $14.99 TOTAL (item + s/h), whereas your offer here is $21 including postage. His label says each drop has 20 mg iodine, which converts to approx 27 mg KI. My last bottle of your SSKI, I measured each and every drop just for the heck of it, and got 912 drops. That's almost 33 mg KI per drop, or almost 25 mg iodine per drop. Beats his hands down.
I've already had weaker SSKI, and seriously don't want to go back. I also don't want to get the 4 oz he's offering, because I get annoyed just thinking about dealing with it. The 1-oz bottle is perfect.