Budget Sewer is the right company for you if you need sewer line work done for the best price. Budget Sewer replaced all of my drain lines with the exception of the larger pipe run before it connects to the city line. They do great work, and although your drain is never unavailable for more than an hour or so, it can take a few days to a week for them to accomplish the job. I'm sure that they would do work in a hurry if necessary. Some plumbing companies will converge a gaggle of people and equipment and work in a flurry, but you'll pay a ton extra for that.
Budget Sewer left our yard in fine shape; neighbors were surprised how our yard quickly went from torn up to being back to normal. All that really suffered was the lawn, but it was real bad to begin and we told them we didn't care about the lawn. When they dig a hole, they don't lay down hundreds of square feet of 6 mil black plastic, then pile the dirt on top as some companies do. I had some work done by another company with this method, and when the plastic was picked up the next day I had wilted half-dead plants and a whole bunch of plastic trash they had to haul away. When Budget Sewer came out just a few weeks later to replace all my lines, they ended up piling the dirt on the same plants, but without the plastic, and left it there for a week, *however* the plants looked good as new when they were uncovered: happy plants, happy consumer and no plastic trash!
You might be able to negotiate with them to do some some work yourself (such as digging shallow areas, if any). Also, their phone book ad says they will beat any quote by 10% (though I suspect they're rarely underbid). After talking to a number of friends who have had quotes for sewer work, it seems that the industry price is $1000 to $1500 per deep hole, plus $3000 per sewer drain line. Further, it seems that there isn't detail in any plumber's numbers: it's just a big price tag and you just figure that dealing with sewage and deep holes in the ground demands a premium.
These guys seem to really know their line of work well. I had my sewer line marked by another company and Budget Sewer said part of the marking (the 4" to 6" join location) was wrong based on their experiences. Turns out that Budget Sewer was right on with where they said the join really was.
Their personality might not be a match for some people as they're quite straight-forward in their communication, but once business is done they setting back into conversation. They don't drive fancy panel vans stocked with inventory, and the tools of their trade are minimal. They rely on and honor verbal agreements but will write down the bid if asked. I wouldn't hesitate to call Budget Sewer again.