The most expensive Lego set ever was the Lego set number 10179 ultimate collectors Millennium Falcon which originally sold for $500 on Lego.com.
its the death star, 399.99
9450 Epic dragon battle. Lego Ninjago toysRus its $139.99
The Most Expensive Set is The "Statue of Liberty" It Sells For 4997.97 USD, by Toys Trading Company. Below is the link.
There all all different types of Lego sets but the one that offers the most for the money would be just the plain bag of lego's . You can buy them in different sizes and with different amounts . The ones with more lego's are more expensive but worth the money .
the batman batcave was sold really high around last Christmas on eBay and amazon..
The best place to find the Lego Monorail set is on eBay. These sets are quite expensive and cost over $150 each. There are also many listings for parts for the Lego Monorail set on eBay.
Most of the LEGO Star Wars sets.
The Lego basketball set is long gone from Lego.com. Instead, buy it from eBay or amazon. The set will be very expensive though because of its' rarity.
i think its the lego batman from the lego set 7783
5421
the first set, they never make that set