This I purchased some time ago, have only replaced filters and membrane once.
Been a great unit powered my 180 and now my 60.
Has 3 clear tubes to see color changes of media filters, helps u know when to change them.
The Membrane sits across the top horizontaly to let it use more surface area.
Also comes with a pressure gauge, all 3 hoses, and the easy sink attachment.
I know i wont get anywhere near the 300 i spent on it, but since everything been changes just recently hows $100.00 that sounds fair.
I cant go lower then that else Id be giving it away, u can buy cheeper ones for 200 brand new.
Take it away for $100.00
Works perfectly see photo.
90GPD