How do you avoid being flagged for an unpaid item when cancelling a purchase agreement when the complete terms are unknown?

[aww-geo]

I agreed to a small purchase costing about $17.00 however the delivery price wasn't shown.  The next page showed the total charges with delivery added coming to $35.00 which I thought was excessive.  I cancelled out without posting credit card info.  This resulted in an unpaid item being flagged against my account.  I think the delivery costs should have been posted up-front where it would have been clear.  I assumed, evidently in error, that I would have various delivery options.

[toby_le_pue]

It showed the shipping charges on the listing which you apparently didn't read through.

Price:

US $16.90

Approximately C $17.57

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Shipping:

US $17.00 (approx. C $17.67) USPS Priority Mail International Padded Flat Rate Envelope | See details

[ok_so_im_50]

Pay for the item to avoid an unpaid item strike. Shipping was stated in the listing.

[aww-geo]

Yes I can see the shipping costs now, however at the time they were not shown on my display until the next screen, and by then it was too late.  I can't explain it, however, having such a large vertical separation between the price info and the shipping info invites mishaps like this.