The DC725 is the DC720 with a hammer function. Dewalt does not offer any 18v batteries above a 2.4ah. You can see 3 of there 4
HERE. You won't find anything new with a hammer function for $200, unless you find a sale, ebay, amazon, CL, ect... The DC725 will be the cheapest 18v Dewalt hammerdrill/drill driver. The DC725 comes with two compact 1.7Ah batteries.
There are a few other options available. You could buy the tool bare, meaning no batteries or charger. Then purchase the battery that suit's your needs, and a charger.
TOOLBARN is one of many online companies who have a build-a-kit program. Going this route will certainly put you over your $200 mark, but you would get exactly want you need.