Indeed, on the first sight the prices of HSH Ride might seem very expensive. Though this is the regular transport prices in Bali. Like with our accommodation the prices for transportation are also made by the locals.
In general private drivers are invented for the tourists – Locals simply have their scooter / car. They rarely go far anyways. Therefore the locals started with ‘westernized’ prices.
There is a few cheaper but also more time consuming options: Taxis, Drivers, Scooters in Bali: How to get around?