Hello Sally, thank you very much for your reply and I totally agree, the vendor must have experience in shipping to Singapore (sea freight, import clearance and last-mile delivery to my home).
When I read your message, I reached out to my vendor (the order I am waiting for to arrive end of May), they actually have written a complete guide about how to purchase from luxury furniture brands in Europe and get delivered door-to-door in Singapore, which I did not know about.
Here is the link to the guide as it could be helpful for others here: Guide to importing furniture from Europe to Singapore
I do think that for it to be cost effective, it would have to be luxury furniture and not just regular low to medium-priced furniture unless there was a big quantity imported. A luxury item can actually be cheaper if you go through the purchase in EU and import to your home in Singapore, compared to purchasing the same item at a high-end retailer located in Singapore (saw this in a real-life example in the above mentioned guide, stunning).