Customs fees are normally calculated based on the type of goods and their declared value. (which the WAA Ultra as the sender will declare on the customs documentation attached to the parcel).
If you have a specific question about the duties/taxes for a parcel that’s being sent to you, you need to contact the HM Revenue and Customs team on 0300 200 3700. You can also find more information about tax and customs on goods sent from abroad on the gov.uk website.
The current handling fee for import parcels is £12.00 for parcels where the value of the contents is below £900 (equivalent to €1000).
High-value goods over the threshold provided by HMRC and the UK Government (currently €1000 / £900), the handling fee is £25.00.
Parcelforce also has to add a charge if there is a need to hold your parcel whilst Customs processes it. It is recommended that you respond promptly to any queries from HMRC to avoid these charges. Parcelforce doesn't add charges for the first 10 days, after 10 days, however, storage fees will be added. For more than 10 and up to 20 working days, the charge is £5.50 per parcel. For each subsequent working day over 20 working days, the charge is £1.35 per parcel.