I remember when Sugargoo was new, but now they are one of the older agents. Sugargoo is important because they make sure that there is competition in the market. Next to Cssbuy, they are the top competitor to WGB/SB/PDB.
But you probably don't care about the background, you want to know how good Sugargoo is:
On average, Sugargoo is cheaper than other agents (double check with the shipping calculator). For many customers this is the only thing that counts. They also include free QC pics.
The disadvantage is the messy website. It happens more frequently that toabao/weidian links don't load and have to be entered manually.
You can get started on Sugargoo by signing up here.
added: 6/26/2023