I have just bought a Samsung Galaxy Tab s9 online. The grade lived upto the A as advertised and it arrived within 2 or 3 days. The price was good for a tablet with a 2 year warranty.
Yesterday I bought the slim keyboard case at a local Cex store for just a pound or so over one third of new price. The condition is easily as new.
Next I am going to get the S pen which Cex sell at a very reasonable price.
I have bought a good number of B grade Samsung phones from them over quite a few years and have no complaints at all