Basic WordPress Site Based on a Theme: $2,000 - $3,500ish
Awesome Custom Designed Website (no CMS): $5,000ish
Awesome Website with Custom CMS: $12,000 - $15,000ish
Awesome Website, Custom CMS, and Custom E-commerce: $15,000 - $25,000ish
Custom Web Application Development: $10,000 to ????ish