So normally I've ordered individual gigs at $30 a pop. Small amounts, can afford to spend it and if the seller doesn't deliver the quality expected I can just avoid using his/her services again, no big deal.
I'm ordering a bulk SEO order for $600, for a set number of links from different sites. What happens when there is a dispute, say if the quality of the content isn't good enough, or the sites supplied are different from the sites on the original order (substituted links). How good is the arbitration process when you have a dispute with the order, when the seller has not adhere to the specification. When they couldn't get links from the site specified and substituted with an inferior quality link for instance.