I had to order my Siglent gear in the UK and the Netherlands because I could not find someone selling to Individuals in Germany... 
Regarding the free upgrades on the SDS2000 series, I could not find any distributor EU wide which even announces them.
aha ... well looks like a similar problem. the local distro initially is also not interested to offer to me because i am not a "company" entity ... 
i think i spot a solution .... i would like to offer my services to siglent as worldwide sales manager to solve this problem ... no no no i am joking
... sorry but a bit of crude joke
but it is a real problem for siglent, they need to pull up their pants abit more imo for the sake of the resellers etc
Some equipment suppliers provide worldwide delivery and this could be your solution.
Others provide a "drop shipping" service but the recipient is usually subject to any customs and local taxes.
Your local distributor MAY have a policy of only selling to retailers, so you will have to locate them.
Maybe with further inquiry to them or Siglent?
Do some homework on your import charges and somebody here can maybe supply you via drop shipping. Import charges may apply.
It would not be my intention to step on another distributors toes, but if they do not have an adequate supply chain in place to end users............