WordPress Invoice, Billing, Estimates Plugin for your Theme :: WP-Client.com
http://WP-Client.com :: WordPress Invoice, Billing, Estimates Plugin for your Theme :: WP-Client :: Full featured Estimates & Invoicing complete with the ability to Pay Online. Customize with your logo -- Use pre-created Items to build Estimates/Invoices quickly -- Convert Estimate to Invoice in one click -- Send to Client as PDF attached to email -- Online Payment with IPN confirmation