Unfortunately I ship to over 150 countries, and each one has their own customs requirements.
Its is literally impossible to find a service that works well in every country.
Standard parcel post Dave, as you used before.
DHL, UPS etc in recent times are not worth the hassle, with their extra charges, paperwork and excess taxes etc. If the sender does not put 3 copies if a fully itemised invoice on the outside they will make up values.
Even the likes of TI cannot manage paperwork to their exacting requirements from the States, so you end up jumping through hoops to get a 30 dollar dev board delivered. Actually in that case I just ignored them, as I was on holidays in Melbourne for a few weeks, but they were ringing the office looking for me and send me emails galore looking for our import agents details! I think they miss read the invoice and thought it was worth 30k.
I the end I arrived back from Holidays and found the package delivered, and no charge has arrived, yet.
BTW If it comes from China, they make up values/charges anyway.
Another of their tricks for items with free or no itemised delivery charge, is to charge tax on the cost of returning the package to the country of origin, using their express local rates. I got caught out on that one last year on a cheap replacement PSU from China with free courier (FedEx I think it was in this case) delivery. The whole lot cost from memory about $45 for two of them delivered. They valued the delivery at well over €100. They claim they have to do this by law...
But chances are an item by standard post will just sail in and be delivered FOC by the local postie. Who might on a bad day look for vat, based on the declared value.