@Acid. You have obviously used the wrong RM service then. You have to read the descriptions carefully because some international services offer only tracking until it leaves the UK, then a confirmation signiture upon delivery, whereas other services do offer full end to end tracking.
It is worth mentioning, as others has said, that all RM services are posted via each country's mail service, so once it leaves the UK it will be handled by that country's mail service. Unless you use one of RMs Parcel Force services, then it is handled end to end.
I've shipped parcels via RM and Parcel Force to German, Italy and Greece with no issues and full tracking.
Some of the other couriers are becoming very expensive for international shipping now so it is worth checking every one for the best deal via parcel2go.com. However when you find a good price on there also visit the courier's own site and get another quote just to check, as sometimes it can be cheaper going direct to them.
But whatever service and courier you use always insure it for the full value and always use a tracked and signed for service. And finally always make the buyer pay for the item via PayPal with fees. This will protect the sale and the tracked and insured shipping gives you a paper trail and evidence of the item being shipped if any PayPal dispute, parcel damage, or non delivery occurs.
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