Yes, Epson did get very zealous about protecting their profits and changing the chips during the manufacturing period of the R280. After a bit, they appeared to decide that the money they were spending on legal costs might be better applied elsewhere. Chipped CISS systems for the R280 did re-appear. BUT, as CDan says, there are a few versions of the chip, and not all CISS sold are capable of replacing all versions. Contact your seller. They may have a work-around that will help you. If this system proves to be a wash, get a refund and look for a system with something like this in the product description.
I would avoid 1/2 height cartridge systems. The only systems I've had that worked flawlessly were full height. Involves problems with ink pressure at the print head being too low with a 1/2 height. Someone may find a way to make that design work, but none that I tried were recommendable.
Edit: That listing mentions German ink. A big plus for refillable carts, but not necessarily so with CISS. I've had flow characteristic probs w/ German inks in CISS. Can ignore that line.