Hi everyone! I wanted to assure you that your feedback here is still being heard and provided to our developers for continued consideration. I do not have an updates at this time on when/if Shopify Payments will expand to Bulgaria. A positive note though, is that we do support Stripe in Bulgaria and Stripe is one of the gateways that powers Shopify Payments! I definitely recommend checking out Stripe as a gateway solution at this time.
You can also see all supported payment gateways based on country on our Payment Gateway’s page.