New Koolance *Dual D-5* Bay Reservoir! (RP-450X2)

[Church]

Sum up prices of two single tops or one dual and price of bayres, it won't result in that much less, +you'll need extra fittings for them not for free aswell. And it won't be that compact as this package.
EDIT
Though wait a sec. I'm trying to figure out how are these pumps interconnected. Serial? Or two separate tops with common reservoir? Or two completely separated reservoirs aswell (looking on two fillports)?

Rereading description on website seems later one, as "Building dual loops .."

I wonder if there will be single loop serial connected dual D5 restop aswell.