Is there anything you can't buy from Amazon.com? Well, probably yes, but it seems like they have just about everything to include LEGO. So are they the best to buy from?
Price: Amazon often has some good deals on LEGO sets. They often have sets that are discounted 20% to 30% off of LEGO's original prices. They also sell sets at LEGO's prices and note that sometimes sets can be over priced so do your homework.
Product Availability: Amazon's inventory can be hit or miss. They often have every current set in stock as well as some of the old sets being sold by secondary market sellers at prices. You just have to search and see what they have.
Set Selection: As mentioned, they usually have a lot of the current sets in stock. Unlike other stores they also have a lot of old sets no longer available from LEGO. They also have individual minifigures, parts, and parts sold in lots.
Shipping: Amazon shipping is usually pretty decent and if you buy over the set amount or have Amazon Prime it's free. If you buy from someone selling on Amazon's Marketplace shipping will depend on that individual seller.
Customer Service: Amazon isn't a LEGO expert although some of the Marketplace sellers may be. I haven't experienced any issues with buying anything from LEGO in the past so I am not a good person to rate their service. Any comments on Amazon customer service?
Overall: Amazon can be a great place to find cheap LEGO sets. They often sell current sets a discount prices over what LEGO sells them for. As for buying from Marketplace sellers, be sure to do your research to make sure you are getting a deal.