Tukcom is a mall that has many shops
you are better to purchase from a reputable shop
JIB, Advice, Banana iT, etc
there are Banana IT shops in Pattaya
the asus vivo sounds a better deal, but as OMF stated, better to go test the feel
and, it is very likely NOT "on sale" you are not getting a limited time duper deal where tomorrow the price is back up
hardware prices decline as new hardware is released
there is an old price (if it ever was) and a current price that you will pay