Intex SWG How much chlorine?

I have an Intex swg with the copper disconnected and has done great for the past two seasons, this year cl output seems low.

Is my assumption correct?
My intex SWG generates 12 grams of chlorine an hour, 12g is .42 oz.

So does the Intex generate .42 oz of 100% chlorine per hour?

The reason I ask is that I think I need to replace the cell on the intex, the cell is $80.

Intex has a new swg/ozone complete unit for $79 on amazon, and the replacement cell is only $40. It generates 11g/hr vs 12g/hr.

Thanks