I dont know about this cats but as they are on eBay I presume they are the same generic ones with a make up brand stamped on.
I ran 100cells I bought second hand for 3 or 4 years before they eventually failed. I then bought some eBay 200 cells. First year they passed fine. Second year was a struggle and initially failed. My car did very few miles in that last year so may just have needed a good drive and Italian tune up.