We are a LIR as small class. We want to apply for ipv6.

Is there a difference as charge apply for between /32 and /64 ?

I mean, a LIR who has large class, when that LIR applies for /32 and has it, What does that LIR cost for that ?

Also, While We are a LIR as small;

1- Can we apply for ipv6 /32 ?

2- What is difference among /32 , /48 and /64 as charge?

Thanks a lot.