how can we make the listing package currency only with credit-to-go

example :

right now it show: TL for turkish currency is the standard website currency.

i wann replace it: with bb-Puan (is our credit-to-go currency)

*******************
listing package 123

10 bb-Puan

5 listings
30 days
1 featured
*******************

BTW. the listing package are NOT effected by the currency selector what is a very bad for bussiness

page visitors from europe cant understand TL or Dollar as listing price currency.