Each DID on DIDX is priced by the Vendor/Seller of the DID. This rate is not controlled by DIDX. Basic Membership: Basic membership on DIDX is free. Member gets 2 free DID's to check DIDX's services and to understand how the system works. Member can not buy/sell DID's and does not activate account. Regular Membership: Regular Membership is also free. Fees: Buyer does not pay a brokerage fee. Seller does not pay a listing or brokerage fee. Monthly minimum quantity charge of $20/month applied through Dec 31, 2007, buyers with fewer than 20 DID's in account and sellers with fewer than 50 DID's. (Prices for DID start at $1.1 per number per month.) Monthly minimum quantity charge of $50/month applied beginning Jan 1, 2008, buyers with fewer than 50 purchased DID's in account and sellers with fewer than 50 for sale DID's. (Prices for DID start at $1.1 per number per month.) Activate your DIDX account by passing the Interop test and have the minimum of # DID's bought or sold as listed in the previous 2 bullets (in addition to the 2 free ones). DIDX is for wholesale customers only. Need fewer than 20 numbers through May 30, 2007 and fewer then 50 numbers after June 1, 2007, visit www.virtualphoneline.com. Commission Rates that DIDX applies to maintain DIDX, averages: UP TO 500 DID's added on DIDX at $1 per DID 501 or more DID's added on DIDX at $0.50 per DID 1001 or more DID's added on at $0.40 per DID 5001 or more DID's added on DIDX at $0.25 per DID      Price listed for DID via API or BUY DID button in your DIDX dashboard includes the commission.