what du mean customs what happens ??
The seller has to mark down the value of the item on the customs slip of the parcel.
You are only allowed certain allowances for importing goods into the country.......
These allowances may have increased slightly - haven't checked the customs site for a while but as a guideline........
Up to £18 value = no charge
Up to £36 value and marked as "GIFT = no charge
Above these values and NOT marked as GIFT = 17.5% VAT + 5% DUTY + £8 "handling fees"
Above these values and marked as GIFT = 17.5% + NO DUTY + £8 "handling fees"
Others may disagree with this info from their own experiences but having imported a sh!t load of stuff from the states in the last 2 1/2 years this is my personal experience of what you can confidently get away with / or not as the case may be
Occassionally things just slip through the net and there's no charge when there should be but those are few and far between now
A couple of years ago I had whole bikes making it through with no charge....... not any more
Good luck !