Disclaimer: most of the below techniques will do more harm than good for your page rank on Google - therefore you should not use these if you want organic traffic. They are only really useful if you want to artificially inflate your traffic numbers.
Another option that comes up a lot with Fiverr gigs is so-called "guaranteed traffic" gigs. These sellers claim to offer guaranteed human traffic (large volumes of it too) for very very little. I tested this out on one of my simpler sites (CodeCommissions) - which at the time had a simple breakout game that most humans would play for 10-20 seconds. The traffic that ended up going to that site had such high bounce rates (greater than 98%) that it was clearly not human (humans naturally engage with simple games after all). After doing some research it seems like a good number of the sellers offering this kind of gig might be using programs such as Jingling and Kiss of the Dragon (KOTD), to simulate traffic that looks like it's coming from multiple IPs but is just one bot working through proxies and spoofed IP addresses.
All in all the results from Fiverr sellers (for pure traffic gigs only) have so far been...poor (if I find one that actually delivers quality I'll be sure to post about it here in the future).
If you aren't already a member of Fiverr you can claim a free $5 gig - that way you can try out the SEO gigs I've talked about above. Alternatively, a more useful sort of traffic creating gig would be a guest post gig like the one offered by Wissamidrissi - a single quality backlink will do more for your PR rank, and thus your long term traffic, than 1000 crappy auto created ones after all.
Prices for web traffic appear to range from 0.00096c to 0.0012c per visitor - a whole lot cheaper than paying for Google Adsense traffic.
I tried this out and they do indeed generate the traffic promised, but if you want traffic that engages with your content you should keep looking. They advertise low bounce rates, but that doesn't reflect my experience.