The cost of applying for a residency program in the United States through the Electronic Residency Application Service (ERAS) varies depending on several factors, such as the number of programs you apply to, the number of documents you upload, and the fees charged by individual programs. However, here is a breakdown of the typical costs associated with the ERAS application process:

1. ERAS registration fee: The ERAS registration fee is $130 for the current residency application season (2023-2024).
2. Application fees: Individual residency programs may charge an application fee, which can range from $30 to $200 per program.
3. Document fees: You may need to pay fees to upload certain documents, such as USMLE transcripts or letters of recommendation. The fees for these documents can range from $10 to $100 per document.
4. Travel expenses: You may need to attend interviews at the residency programs to which you have applied, and this can incur travel expenses such as airfare, hotel accommodation, and transportation.

Overall, the total cost of applying for a residency program in the US through ERAS can range from a few hundred dollars to several thousand dollars, depending on the number of programs you apply to, the fees charged by individual programs, and your travel expenses. It is important to budget carefully and plan ahead to ensure that you can cover these costs.