Hi, I also needed a Venator alloy and saw this set of 4 for £250 with tyres on ebay:
https://www.ebay.co.uk/itm/275926292...Bk9SR-TM4vSmYw
This ebay listing is not connected to me (in case you wondered). As I managed to find a single wheel to replace a corroded one, I have a single 18" Venator alloy which needs refurbishing if you are interested.