Those looking to get the best buy prospect out of the Samsung Galaxy S4 should head out to Amazon Wireless where the powerful device is on retail at the lowest possible price point.

Still on its early global rollout stage, the GS4 is already on Amazon, arguably the best place to get high-end gadgets without breaking the bank. The online retailer traditionally offers upscale Samsung handsets like the Galaxy S3 and the Galaxy Note 2 in affordable price marks.

Earlier this year, the two mobile phones went as low as $US50 on limited offer, a feat that Amazon accomplishes in close collaboration of U.S.-based telcos.

In the case of the GS4 launch, Amazon is playing its usual game, partnering with AT&T and Sprint to get the cheapest new Samsung flagship into consumers' hands.

And the best offer appears coming from Sprint, which sells the GS4 for only $US150 via the Amazon online retail site. On AT&T, the sticker price says $US168.

The package, of course, consists of the 16GB model but buyers wanting to get more room to store their data should not fret. They can easily buy a microSD card and slide it in to the GS4 expansion to enjoy generous storage space.

One thing to remember though, according to Gotta Be Mobile, the delivery time takes a little longer - from two to four weeks. The delay is reportedly caused by limited supply at the moment.

And would-be Amazon buyers looking to get the GS4 laced with the 8-core Exynos chip flavour should look elsewhere. Note that the promo is mainly geared in the U.S. market, which Samsung said will get the 1.9GHz Snapdragon 600 version.

Experts said the performance difference between the two GS4 behemoths is hardly noticeable so getting this Samsung flagship, which has been winning positive reviews from major tech sites like AllThingsD and CNET, is already a snatch at below the $US200 mark.