Be sure to go with
www.trafficholder.com as they have US/CA/UK/DE traffic for about 3.6$/1k uniques and Choker got it for >5$.
It's has much cheaper traffic then Choker. They only have 10% commision and if You put their small banner on bottm of Your site then You have 5% discount.
If You buy tons of cheap TGP traffic, put toplists that counts UNIQUES/day to rank in TOP10, not those who have Hits IN/OUT. You'll get some nice extra traffic with higher quality with this trick Put as many of them and You can get hundreds visitors of higher quality as EXTRA.