A common issue when shopping for countertop fabrication is the enormous variances in pricing for shop to shop. From someone who is typically considered a higher priced company, all I can say is that "you get what you pay for" or "if it seems too good to be true, it probably is".
We are constantly compared to other company's bids, but at the end of the day it is never apples to apples. There are a number of things that can contribute to such differences in price.
1) They are not including everything. A number of companies will seem like the low bid, but will exclude a lot of charges that others include.
They may charge extra for edge profiles, sink cutouts, removal of old tops or sealing after they provide you with a price and ultimately when it is
all said and done, it costs you more than the others did originally.
2) They are not providing you the quality of fabrication and/or installation. There are a number of corners that can be cut when fabricating countertops.
If a price is significantly lower than another company they are more than likely sacrificing something somewhere. Examples would be not polishing edges
to the fullest extent possible, using discounted slabs that have imperfections, using installation methods that produce cost savings, not sealing tops
or using inferior sealers.
In short, just remember that the next time you think the higher priced company is trying to make a killer profit on you, it just might be the opposite and the lower priced company is so much lower because they are giving you a product that is far from perfect.