On January 6th I received an email titled as follows: ATTENTION POWERSELLERS: FREE LISTING DAY is January 8th for items starting at $1.00 or less! The content of the Newsletter corroborates the title in that the promotion for Free Listing Day was on the 8th.
Consequently I listed 96 items at $1 on January 8th for which, my account reveals, I was charged about $72. On January 9th, my account indicates, I was given an insertion fee credit of .35 for the promotion on the 7th.
I've just sent an email to EBay about this matter.
If you availed yourself of this promotion on the 8th check your account to make sure you were reimbursed as promised and not for listings on the 7th.