Microsoft Surface Pen

JD3112

Why is there a difference in price for these two? Are they different models?
Its hardly because of the colour?!

https://www.currys.ie/ieen/computing-accessories/computer-accessories/tablet-accessories/tablet-cases-and-keyboards/microsoft-surface-pen-black-10167914-pdt.html

https://www.currys.ie/ieen/computing-accessories/computer-accessories/tablet-accessories/tablet-cases-and-keyboards/microsoft-surface-pen-poppy-red-10200802-pdt.html

JoyPad

The Poppy Red one is the latest generation of pens, while the Black one is likely one of the previous versions. Based on colour options, I'd say it's the second generation that came out with the Surface Pro 3. It's a shame that Curry's doesn't give the Microsoft product code, it would be easier to know what you're buying.

See more information here. Check device compatibility lists carefully to see if you can use the cheaper pen with your tablet.