Crisbell offers 2 daily buses from Godofredo Viana to São Luís. Though the average price for this trip is $37, you can find tickets starting at $31. The trip between the two cities usually takes about 705.
Based on 457 reviews, the company was rated 4 stars on Busbud. Travelers were especially satisfied with the cleanliness and the ticket access but often complained with the wifi. Expresso Guanabara ticket prices on this trip start at $32
A good way to travel this route is with Aguiar buses. The company offers 2 daily departures, with ticket prices starting at $34 and the shortest trip taking about 810. Aguiar gets you where you want to go for a fair price.