If you have not already used up any free listings this month just upload a couple, they will probably show a fee of $3 when the fees are calculated but after you upload it should say your fees are $0 and that you have saved $3.

If that is what hapens then you should be OK to upload all the rest, it will show the full fees of $1.50 each but the actual charge will only be for any listings over the first 40 for the month of October.