Although there is very little choice in 3 stud they are increasing, Ebay for instance wolf race are making a range of different 3 stud alloys, there are two options
1) Pay a fair amount for brand new or second hand or ...
2) 4 stud coversion
For second hand alloys try sites such as saxosportsclub, saxperience, AX owners club and also 106 owners as the 106, AX and saxo have 3 stud wheels meaning there is a fair amount for sale, just thought i would help you lot out as i had the same trouble for a while
1) Pay a fair amount for brand new or second hand or ...
2) 4 stud coversion
For second hand alloys try sites such as saxosportsclub, saxperience, AX owners club and also 106 owners as the 106, AX and saxo have 3 stud wheels meaning there is a fair amount for sale, just thought i would help you lot out as i had the same trouble for a while