Here it dosent really matter how a parcel are labeled, some think if it say gift then you can bypass customs, byt sadly that not the case.
I do have parcels that have come to me this way and not had to pay any taxes, latest this was the parcel SJcams sent to me with a SJ6 Legend and SJ6 Air camera. ( true value +300 USD )
But this are solely to blame on the incompetence of Danish postal acting on behalf of Danish customs, so some parcels fly strait thru customs no fuss at all, and others get caught out even if it is a small padded envelope.
The dividing issue are the 90DKkr where parcels under that are defacto considered a gift and as such not subject to customs and taxes, but parcels more than that are.
So lets say i get a parcel with the value of 100 kr, i then have to pay customs and taxes of that and this will be something like 20 DKkr,,,,,, BUT ! then i also have to pay a 160 Dkkr handling fee that DK postal / DHL /GSL are allowed to collect for their effort, and so my little 100 DKkr parcel end up being a 280 Dkkr parcel in total.
90 Dkkr = 14.5 dollars.
Chinese sellers often know this and undervalue the parcel on their own accord, some you can ask to do that when shopping, like the parcel i got last week with a real world value of 100 USD, but it was just valued 10 USD on the label, so no extra charge for that one.
I have also had huge heavy parcels sail strait thru customs even with a invoice on the box saying several 100 USD value, but sadly its not every time, but it is nice when it happen not least with a expensive parcel that would have cost a lot in customs and taxes.
Some times there are no value on the postal label and no invoice in the parcel, then i get a letter saying i have to document for the value, so i copy paste the text in the order confirmation you always get on E mail, and then if i feel like i edit the numbers there.
And e mail that to customs, and they are happy about that never a question asked.
My friend use a Danish company called Shop USA for larger things from the US, so he have a US postal address at their warehouse in Maryland i believe, so for instance some years ago en got a overhauled Dodge engine for his ram charger, costing +2000 USD, but since Shop USA handle customs he just told them he paid 1000 USD for the engine and so he got is a lot cheaper.
Shop USA use both airmail and shipping, needless to say the heavy engine ended up in a container and took a month or so to get over here.
Over here it are pretty annoying you have to wait for a snail mail letter to pay your customs, but when you get that letter i just go online and pay the customs in seconds using the Invoice ID and pin provided in the snail letter.
it is pretty easy just add a few days when it happen, or more due to incompetence, my 100 USD worth of parts was in customs warehouse for 11 days before i finally got them.
And some times they forget all together i have paid the customs and then i have to call them, and then they say " O yes i can see you have paid customs 4 days ago, i make sure your parcel get released now",,,, and no "i am sorry for the inconvenience".
I have just been part of a group buy on another forum, there the forum designed item was sold with Banggood as distributor as they can handle 2000 items to worldwide customers in a short time with no problem, and it was made sure the 40 USD item was undervalued enough to sail strait thru EU country and US customs and so they also did.
If it wasent for these terror days i am pretty sure i could get a American to buy a 9 mm H&K pistol, and then a similar H&K airsoft pistol, then put the real gun in the box for the airsoft gun and ship it to me, its not the human aspect that would worry me, only explosive sniffing dogs and machines could ruin that deal im sure.
As long as it was labeled airsoft pistol and 15 USD value i am pretty sure it could work if it wasent for terror paronoia.
It is pretty discouraging that Denmark as one of the front running countries in making things digital and still still have to wait for a snail mail letter to pay customs, not least as Danish postal have a tracking app, so they could make it so i could pay customs thru that app.