Law / ALLEGRO fees - I can't find them anywhere. How much it costs to sell something on ALLEGRO? [8]

Hi,

I would like to sell laptops on allegro.pl, but I do not know how the system works? I am a private seller, not a company.

I would appreciate if you could give me some answers.

1. How does PayU work?
2. After a buyer buys my item, will I receive the money instantly in my bank account? Does PayU hold the funds until I deliver the merchandise or, can I withdraw the money instantly into my bank account? If PayU holds the funds, for how long do they do it? I need to know it because I have to pay my suppliers.

3. Do polish people prefer to make a direct bank transfer or pay by PayU?
Is the buyer protected when buying on allegro.pl and paying via direct debit (bank transfer). Is the buyer covered by Purchase Protection in this instance?

Thank you very much.
Your answers are much appreciated.