Checking these forums, WHT and Ebay will show such accounts as available. Currently $6.95 accounts go for around $350 and you should try to get one that is directly under the ETP (the guy/firm) who has the main account from which yours is registered. There have been a number of scams where accounts have been advertised and never delivered.
Currently there are a variety of accounts at various prices on Ebay but Be Careful! Check carefully what the prices are - some have $6.95 reg charges but higher fees for renewal or transfer, so you end up paying a lot more in the long run. Others inflate some of the prices for domains below .com, .net & .org but it's easy to spot where the charges are listed and if they aren't listed don't buy.
Of course $8.95 accounts are available free and accounts between $7 and $8 are available at lesser cost.
Hope that helps.