Looks OK, also from a company so if they don't fit you can return them or exchange them.
I'd rather go for OEM as we all know what aftermarket parts can be like 
Have you tried a local scrappy? You still got 10 days to decide on that item on the bay.
id prefer new parts as a general rule, but also scrappies around here have cars stacked 3 high, i dont fancy being up a ladder with the cars rocking to and fro whilst trying to beat the struts off the car!
i have used that seller MANY times and the parts seem A1, plus they have great service - once they mis-picked a part, i contacted them and within 12 hours they responded with "dont worry about sending it back, we'll send the right part to you 1st class" - so now i have a speedo drive gear gasthering dust in the garage