Yes, as has been noted, Toaks actually make the LiteTrail cook pots for Jhaura, which is why they are branded "Toaks." But no, the pots sold from Toaks are different from the ones that are sold by LiteTrail. The ones they make for Jhaura is made from a thinner ti, which means they do weigh less. I have the Toaks 375 ml mug and it does have a slightly thicker feel to it.
And as far as weights are concerned, my LiteTrail 550 ml pot only (without handles) weighs 1.4 oz. The Toaks 375 ml mug with handles weighs 2.2 oz. Of course it would be more of a fair match had the handles been removed from the mug, however, the handles I removed from another ti cook pot sometime back (which are actually a bit larger than these on the Toaks mug) weigh 0.5 oz. So, this would make the 375 ml Toaks mug without handles around 1.7 oz, which is heavier than the 550 ml pot by 0.3 oz, and has a lesser volume.
As for price, that is up to the person to decide if it is worth it to them. From my understanding, it takes a little more care to work with thinner ti, which increases the price. Of course I don't know this for sure, however, it is a safe bet to figure that as things get lighter in the backpacking world, the prices go up.
Me myself, I love Jhaura's kit, and is probably my favorite cook kit. I have the original version 1. No handles, super thin ti windscreen and uses paper clips to hold it together, and I have no reason to change it. I love the way it works, how it all packs together, and that it is as light as I can get it. My ENTIRE cook kit weighs 3.9 oz (which includes spoon, bic, towel, parts to use pot as mug, etc...)
It is cool that Jhaura does offer the different pieces of his kit separately though for others that may want to "upgrade" their older kits, or piece together their own.