A couple of things...the basic 113.###### contractor saw was made by Emerson for Sears, and is a solid design but has a lame fence. The same design went on to become the Ridgid contractor saw that's owned by Emerson, and was most recently made by TTI/Ryobi for them. The motor isn't a true 3hp, it's more likely a 14 amp 1-1/2 hp induction motor that can be confirmed by checking the motor plate....if it runs on a standard 110v outlet, it's not over 2hp. Nice mobile base, includes the blade guard and miter guage. It has a standard size top (27" deep x 20" wide for the table, 40" wide including the cast iron wings), so it'll accommodate aftermarket fences, and other 27" wings. $250 is on the high side considering you'll probably want a fence upgrade, but it's a good basic saw with potential. $200 tops (maybe offer $175), then look for a good deal on a better fence, and sell that one for ~ $35-$50 bucks to offset the cost. The Delta T2 fence can often be found in the $150 range. With any luck, you're total cost will be in the $300 range for a good saw.
The Delta looks to be the TS300 (descendant of the old 36-600 and predecessors), which is really a compact saw that's not quite full size, and has a universal motor, as opposed to a belt drive induction motor on the 113.######. It'd be ok for $100 as a temporary saw to get you started, but it's not one you can grow with and will likely want a different saw fairly soon.