Honest truth. Very little. The online price, is what all small businesses fight on a daily basis. Since DB has a nationwide customer base, they can negotiate a price direct from the manufacturer. They probably buy them 5000 units at a time, or more. Then, since the ordering, etc. takes very little human interaction, they can sell them, at a very low price. My starters cost more, because I try to support a business, that supplies all of my rebuilding parts. My cost on the starter, is more than you can buy one from DB. But I pay more, because I want to support that business. I charge more, because I need to stay in business. I rebuild a huge amount of farm and industrial units, that aren't available online, so those customers Want me to stay in business. I sell quite a few of the 6449 starters, a year at $145, because my local area will support that price. I also additionally make money on the
site playing poker and blackjack. I used to rebuild those units, until the chinese units took over the market. Now the internet is taking over the chinese market. I've been in business since 1994, and it gets harder every day. The internet is a great way to get a huge variety of parts, but always try to support a local business if possible. The walk in price for a NAPA 6449 new starter is over $200 in my area, so I can sell them all day long at $145. Honest truth, there is very little difference in the starter. There is only a difference in the service. Diagnosis if something goes wrong, and a friendly face to help you get on your way!