Ok, here we go.
If the product plus shipping cost has a value of £18 or higher you will be eligable for VAT, import duty and brokerage fees.
For a Gift the limit is raised to an enourmous £36!!!
Commercial samples comming in to the country are still eligable for Tax based on the value of the commercial invoice, should that be zero you will possibly have to pay "Market Value" tax, for which they will probably crack open the box and look at your recipt.
Warranty repairs are taxable unless you can provide proof of shipping should the package be stopped, and a package of the size and weight of a marker that is quite likely!
Obvioulsy I am not telling you this to defraud the Tax man!
Just bear in mind that the value on the commercial invoice (this goes outside the packaging!) is what your duty fees will be based on. I recently got stung as some muppet had put a value of $300 on the external invoice, even though the goods were only worth $133, and the invoice inside said as much!!!! So should by some mishap a lower value be marked on the outside of the box, this is what you would be taxed on.
So perhaps you could be buying a commercial sample at a discounted rate...........and then cross your fingers!
As for marking on the outside:
Product Type : Sporting Goods
Product Description : Paintball Marker
Tick the commercial sample box and away you go! Avoid making it too obvious, excess detail can become an "Orgy of evidence" and instantly looks dodgy!
Laterz
Ian