As long as you are a regular seller, payment will be released 48 hours after the tracking shows delivered on Ebay.
Sometimes that means waiting until later in the day when you are expecting a payment.
For items under £25, payment should be released immediately if you receive positive feedback.
So, if the tracking shows delivered on Ebay, and it was more than 48 hours ago, contact Customer Services if your funds are not released.
"There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.”
Søren Kierkegaard, Danish philosopher (1813 - 1855)