Here are some rough estimates on price - can be more or less depending on your wants and needs!
Birthday T-Shirt or Onesie with Appliqued Number and Embroidered Name: $25
Birthday T-shirt with Number, Name AND Added Applique: $25-31
Tie T-shirt or Onesie: $15-20
Appliqued T-shirt or Onesie: $15-21 (With name added: $22.50