Something not right.
Aren't they BBS RX IIs?
In which case...16" not 15"
And with those tyres...on a Mk3?
I doubt it.
More likely a Mk4.
So the tyres will be no use for a Mk3.
If the wheels are in good nick, then £325 is probably an OK price...but bear in mind they are likely to be 6.5" wide Mk4/Bora wheels not 7.0" wide Anniversary wheels.