How much does it cost to travel to Bolivia?

Roughly speaking, it takes about 50 hours to start from Guangzhou, pass through Doha, Sao Paulo, Brazil, and arrive in Santa Cruz, Bolivia after two transfers. The air ticket price in February next year is about 11,000-12,000 (one-way). Even if 12,000 plus one night's accommodation, the round-trip air ticket will cost around 25,000. It is about 900 kilometers from Santa Cruz to Uyuni. Of course, you can also choose to fly from Santa Cruz to La Paz and then to Uyuni, but it will probably cost more. If you rent a car, it's estimated to be 1000-1500, 3000 round trip. The travel expenses will be around 28,000, depending on how long you want to play. The accommodation cost together is estimated to be around 35,000. But what I am most curious about is how to get a visa, whether I need a transit visa to Brazil, etc. I guess it will be more troublesome. Hope that helps.