I would say go for a Yamaha, since they have a official presence here in Singapore.
Generally Yamaha instruments, and definitely basses included, you pay a fair price for the quality of the instrument you get. You won't get ripped off. Moreover, they have a large presence here in Singapore, so the prices you pay should be fair.
As for the other brands, it's going to be expensive. You pay $1000, you may end up with a rated $600-ish level of bass guitar. The reason is that the shop needs to parallel import the instrument, add in shipping costs and add in shop profits, etc.... you're going to pay extra $$$ for a lower rated level of instrument.
The more middlemen in between the chain, the lesser rated quality instrument you going to get for the same money you spend.
You can go this route if you die die need to buy that Stingray or other brand.
But since you're only starting out, and don't need to be brand conscious, you'll do well with a Yamaha bass. Fair price for good quality bass instrument.
I'm not saying Yamaha is cheap... there are definitely expensive ones, and they are good quality. I'm saying that you're paying $X for a Yamaha bass here in Singapore, you'll be getting a equivalent $X level quality Yamaha bass guitar.
As opposed to paying $X for a parallel import brand of bass guitar, but because of factoring in shipping and the price markup of the shop, you'll end up getting a 60% of $X level of quality of bass guitar.