My idea is to find complimentary services (e.g., someone who will write a 400-word article for $5 and someone else who will submit it to 500 directories for $5 and yet another who will Tweet your money page for $5. total: $15. Then you sell it as a single service: "I'll sell you an original 400 word article, then will submit it to 500 directories and will Tweet to my 900 friends...all for $40!" Not everyone on Fiverr is reliable but if you can develop a talent pool of people with top-ratings, you might be able to carve out a nice little arbitrage service where your 'value-add' is simply putting together these services into a single package and charging a price that's greater than the sum of its individual parts.
Food for thought?