In the UK, it's 100 free listings unless you are a business.
eBay is a lot harder than you think if you don't understand it.
PayPal is an absolute nightmare which is why I never accept it on any sales websites I build for myself or others.
Make sure when you sell you immediately withdraw the funds from your PayPal account to your bank account.
It's very important because it protects you from unscrupulous buyers.
I had a case with an international buyer (based in the US) who said they never received their order and put in a refund request with eBay.
He then proceeded to say it was damaged (even though he said he never received it) and included photos of the "damage" using photos that had a digital date preceding the date he said he never received it.
The item he ordered wasn't the one I sent him because it had a Ltd Ed number and the one in his photos didn't correspond with the one I sent him.
eBay sided with him, despite my proof he was lying.
I, therefore, disconnected my bank account from my PayPal account after ensuring all funds had been withdrawn - make sure you do this in these situations.
PayPal then said I owed them x amount as eBay refunded the buyer in full and charged the refund to my PayPal account - I told them they weren't getting it because I had the proof.
A few months later they sent me a lovely letter saying they were going to send the debt collectors in, so I called them up and told them I would take them to court for not protecting my rights and also told them to send whoever they wanted to send. After 10 minutes of them threatening me and me just calmly telling them where to stick their idiotic and illegal policies, a manager told me they were going to write off the debt because they could see I was telling the truth.
Whilst I dislike PayPal with passion, I have to give kudos to the manager who I spoke with because she told me to be careful on eBay because people do stuff like the aforementioned all the time and eBay will 99 times out of 100 side with the buyer no matter what the seller says.
eBay staff in the main are incredibly lacking in simple intellect with regards to their own policies and commonsense, and I put that politely.
Need any advice, message me and I'll help as best I can.