Warmoth does not do assembly. They only do the sale and manufacture of replacement and, in this case, proprietry designs like the Gecko and G-Basses.
I am sure some of the forummers here will have a Gecko or would've ordered one before. If you've decided that you definitely want a Warmoth, it would help you immensely to do a checklist of all the parts and any remarks pertaining to options like routing, placement and finishing. This will also facilitate your final costing.
Warmoth will then flat-pack the parts IKEA style to Singapore and then you work with a tech here who will assemble it for you, I guess. There are many here who provide that service.
Hope this has helped. Post again if you need help. I ordered an unassembled Warmoth Deluxe 5 Jazz when I was in Perth, and I can say it wasn't 'that' easy a task.