isPaidListing(listing: Pick<Listing, "unit_price"
| "can_pay_more"
| "customisable_days"
| "day_prices">): boolean
Whether an listing can accept payments: a flat price, pay-what-you-want, or a customisable-days listing with at least one non-zero day-count price.
listing: Pick<Listing, "unit_price"
| "can_pay_more"
| "customisable_days"
| "day_prices">