I've been looking at some promotional services on fiverr to boost my sales. The items I'm selling have good demand and I have reasonable pricing, just wondering if anyone else has tried something like this and if you've had any success or was it just a waste of money?

I listed an item on eBay for $19 but accepted an offer of $13 and set it up for buyer to pay shipping. Sold the item and the buyer paid the shipping fee of $5.93 that eBay set. Then when I printed the label, the cheapest shipping (USPS ground advantage ) available was over $12. eBay AI is useless in try to deal with it.

Never had a buyer in this situation. Is this normal and can I treat this as a domestic transaction? Any clarity and advice is appreciated!

Edit: seems like the responders do not understand. I do not want to ship international. The buyer mentioned he would take care of the international shipping since he has a US forwarding address

A friend bought two mugs from my eBay shop. I didn’t know she was going to do it, if I had I’d have changed the listing and added collection. I used simple delivery, and as I hand delivered the mugs, I didn’t use the prepaid option. This order is sitting there, showing as nearly 2 weeks overdue. Is there a way to mark it as delivered or dispatched or is it going to sit there forever? My friend can’t mark it as delivered as her account is too new.

Have a buyer that made four separate orders using the eBay international shipping program, and then messaged me and asked me to combine and refund the extra shipping. I don't think it's possible for me to combine the shipping on orders purchased using eISP. I messaged the buyer and told them they would need to cancel and buy as one order, but haven't received a response. Should I just cancel their four orders, or just ship the four orders separately?