As Euripedes says it is much cheaper than I have paid in the High St.
But there seems to be a slightly cheaper option.
Buy the 5 cartridges T0441, T0452, T0453 & T0454 separately and it seems to be about £4.20 cheaper. The possible snag is that for some odd reason the T0441 Black comes from a different supplier, not Amazon, so postage costs may be higher.
Also note that the colour cartridges in this package are NOT the higher capacity models T0442, T0443 & T0444, which are more expensive. I just received the Multipack from Amazon and it contains the standard capacity compatible T045x cartridges. I have no idea what difference there is between standard and high capacity.
By the way, I had had problems with cartridges in my Epson C66 being shown as empty when there is clearly plenty of ink left. This usually happens when I have not used the printer for a couple of months (I often make long overseas trips) and I think they have some sort of expiry date on the chip. I bought a device called a Jettec Resetter which resets the chip so the remaining ink can be used. It quickly paid for itself. I bought it over the Net, no doubt a Google will find a supplier. I assume Epson do not approve and would prefer us to replace all cartridges every few months whether needed or not.