Well somewhat disappointed but unsurprisingly my emails have gone unanswered and all of the $43 302" have now been pulled from sale (Hmmmm?), at least from what I can see. Well all is fair in the free enterprise system both for the seller and buyer.
As for me this consumer was ready to buy the 304A or B and being a stand-up -guy now plan to spend that disposable money else-ware for reasons I don't have to mention, salavie!
I been planning on the DIY Fluval 404 project in which I plan to turn them into circumference filters where I can use my own bonded pad or the tall hole house pleated filters they sell at Lowes for $18, which are about 3 times longer then the Magnums Carts. I went to Lowes and picked up everything I need a section of 1.25 inch PVC pipe enough for both canisters, a small sheet of 1/4 inch Plexiglas enough for both, and a package of plastic canvas which has about the same thickness and strainer size as the Magnum plastic strainers so rolling them into round strainers with PVC reinforcement should be easy. Total material cost $17, the rest I already have on hand such as neoprene gasket for mating and PVC glue.
As soon as Im finished Ill post the DIY.