Adding a class of goods and services to your US trademark application will cost you $250 in the case of using the TEAS Plus application and $350 in the case of using the TEAS Standard application.
TEAS Plus uses a pre-approved list of goods and services the applicant chooses from. Custom items are not allowed. This application type is more suitable if your items can be found in the Goods and Services ID Manual. Not only is this application type cheaper, but it has an overall lower refusal rate. TEAS Standard is advisable to those applicants whose goods and services items aren't listed in the manual.
Please note that these fees are just the government fees paid directly to the USPTO. Additional fees will apply if you use a lawyer, a law firm, or an online legal service to file your application.This representation is required if you are not a US resident, but you are free to choose your representation.