Hello guys, newbie here and I have a question regarding rims. I am currently driving a icon 1.3 myvi with a 14" rim

So I went to this tyres shops today near serdang.
The sales guy told me I have to trade in my Silverstone tyres together with perodua rims with additional Rm1000 for 4x vossen 15" rims and 4x 15" tyres.

Worth it?
Thanks guys