Dude, your money but I wouldnt buy a trigger assembly for more than the rifle is worth. You can tear down the sks trigger assembly yourself pretty easily, and polish up bearing surfaces to improve the trigger pull. Also wolff gunsprings makes replacement springs for the triggergroup to help with trigger pull weight.
Here is a link to the wolff gunsprings sks powerpack for nine dollars, I would try that along with polishing the sides of the sear and the channel it slides in. I have just polished the sides of the sear and where it slides in the trigger assembly in allmost all my sks rifles, this twenty minute job does a world of good on the trigger pull.