Is it possible to convert currency in PBA-S? How to make prices be shown in one currency in store and invoices are sent in another?
All financial documents of PBA-S use one currency which is set in Regional Settings of provider panel:
PCC > Top > Configuration Director > Miscellaneous Settings > Regional Settings
Resellers can set the own currency and enter the cross rate between the Provider currency and Reseller currency. This currency is used for prices in hosting plans, store and all financial documents (payments and invoices). Here you may find more details about system-wide currency settings: