I have a cultus,and if i want to put the New rims what shall i do with the old ones,the stock ones,can they be exchanged with the new ones by paying some money,because if i buy the new ones,the old stock ones will be useless for me,does the shopkeeper gives a great price,they are all Brand new,my cultus is of 2009 Sep model and is hardly driven alot,as we stay out of country.