Hi Vicky
What a brilliant gift!
Some terrific advice here and from very well respected members. It's not that expensive if it is serviced and you want it with a warranty from a bricks and mortar shop. Watches in UK are expensive and it would be far too high for people here but they will look for deals. As someone else said, if you like it, then the price is what it is - you'll soon forget it. There are clearly better watches out there for less money, though.
Personally, for a non watch person I wouldn't go with a non automatic as that means winding every day and not everyone will do that.
My other concern would be that you will have an unreliable watch. I noted this comment in the advert "It's Automatic and will have a 24 hour reserve power". These watches should have at least 38 hours and usually are well above that after a service. You say they will service it and let's hope so.
If you get it, make a simple test that will give you an idea of the health of the movement. You won't be able to do more than this and it's just an indication.
Wind the watch with the crown fully in, turning the crown clockwise for 40 or 50 complete turns (it's an auto and you can't hurt it). Pull the crown out and set the time - turn the hands forwards at least 24 hours so you can see the date change and get am/pm correct. Note the date and time displayed and then leave it in your jewellery box dial up until it stops. Calculate the power reserve - if it's under 38 hours, then I would return it.
You can improve your test by noting the exact seconds and minutes it started and, after 24 hours, check again. If it's running in dial up outside of 15 seconds then it is probably not well set up. This is not necessarily an issue, though.
Good luck, Chris