Have you returned to selling after a bit of a break? Then, some initial payouts especially for high value items, can be held for a little longer, as sudden selling activity can raise red flags to eBay, it can be a sign that the account is being hijacked.
If your payout is still on hold in a few days, contact eBay Customer Services, give them the tracking number of the item received, and ask if they can release your payout sooner.
This is the easiest and quickest way to contact eBay Customer Services, for a Call Back option.
https://www.ebay.co.uk/help/eua?id=5275&mkevt=1&mkpid
Lines open 8 a.m. - 10 p.m. on weekdays
9 a.m. - 6 p.m. on weekends.
Automated agents will be available on chat outside of the above hours.
I recommend contacting CS first thing in the morning as there's more chance of Dublin answering.
@stesw-4332