Any good or not worth considering?

[THL4KEL]

https://www.ebay.co.uk/itm/EXTREPURE-ION-EXCHANGE-RESIN-001-X7-C100-39-x25L-bags/382542838688?hash=item5911547ba0:gZoAAOSwpJdbTFun

 

[Nudel]

How much resin do you use? With a two year shelf life can you get through it? What if it's rubbish? 

Better but a proper RO system for that money, and if you have one you don't need that insane amount of resin anyway.

Just my opinion.

 

[THL4KEL]

It's Chinese resin. I wouldn't use that much but could sell it on.