Hi, I paid £150, not much less than eBay I guess but I was able to check the wheel & didn't have to wait plus it is a 16" not 15" as seems to be what is on offer on eBay ( although I dont think there is any safety related difference between the two).
One thing I didn't ask & need to find out is if I have to fit the spare wheel do the crome wheel nuts - 3 normal & 1 locking fit the space saver, or do I have to fit normal wheel nuts?
Finally, it came with a polystyrene insert which sits on top, retaining bolt & washer & carpet. The polystyrene insert has trays cut in which can accommadate a few bits such as the blue tool kit that came with the car, it doesn't quite fit flush as noted by batman but I'm using the insert at the moment. I have a rubber anti-slip mat covering the boot area so the area is covered so it is virtually level.
Road noise doesn't seem worse with the replacement carpet & it means I dont have to carry the Honda tyre gunk & compressor (plus the tin of Holts tyre repair that I bought).
Yes, a trade off between loss of storage space & piece of mind but as I'm off touring Northumberland a couple of times this year I'm comfortable with the former.
Hope this helps.