If the WSP is in good condition it's worth about 100 or something.
That means you get the G25 for 75.
75 for a used G25, I would probably go for that.
You have the 911 Carrera + RennSport Wheel Stand V for 222 euro including shipping.
The G25 is a better wheel overall though, just depends how much you want out of it and of course there is a risk of it dying.