How much for rust removal and repair? It's a small area on the back corner

Okay thanks guys..

They do free estimates there are 2 other shops in the area. 83rd near Yates Collision kings (something like that) 87th and Commercial Louie's about 3 more blocks east of commercial From what I hear they do great work at a reasonable prices

It all depents how bad the rust is and also what body panel is it and does it require a blend u can take it in for free estimate