Other than Rick I take it not many posters have actually lived inside of the city and just visited the Stadiums or maybe Penns Landing/Delaware Ave.
Philadelphia has lots of row houses. Other cities call them town homes, but these things are all in a row as the name implies with parting walls thin enough to give you good intimacy with your neighbor. A row house in a decent neighborhood will start about $150k on average. If you're lucky you will get a little patch of dirt out front and maybe a place to park.
Your better neighborhoods have twin and sigle homes. Areas such as Chestnut Hill, West Mt Airy, Roxborough, Andora, and Pine Valley are quite nice. Expect prices to start about $250k.
Center city is nice, has lots of clubs and restaurants, and the "energy" of the city. Row houses start in the $300k range and quickly go up past a million. For your money you get nowhere to park and bums pissing on your stoop. Everthing is within walking distance, so sell your car, you won't be able too drive it anyway.
University City has it's action and some nice houses, but is totally surrounded by slums, and despite all the campus police the students and residents still manage to get raped and robbed on a regular basis. North Philly is row after row of abandoned houses. Decay at it's best. Temple University area can be very dangerous after dark.
Southwest Philly is about the same, falling apart and a good place to get shot. West Philly the same. The Northeast took a heavy toll from an abundance of section 8 and other housing programs. Crime has been on the rise in this area. The greater Northeast is saturated with Russians and more importantly a lot of Russian Mofia. A cop pulled one over for a traffic violation and he shot at him with a 12 GA. There has also been homicides in this area involving drug dealers in which etire houses have been executed. The Franklin Mills Mall has many robberies and a few police shootouts have been there.
Taxes are high in Philly. The sales tax is an extra 1% to make it 7%. Tere are countrless surcharges on everything. Auto insurance averages about $2k for one car. There is a city wage tax. I think it's 4.5% fo5r residents. For all the extra money you spend you get a school system that is total crap. They need the cops that they have there. It's not just for show. The other city services are horrible, and don't get robbed or catch on fire because the 911 system is sloooow.
As far as guns, Philly don't like em. There was an assault weapons ban in 89' that thank goodness the state overrode. Philly wouldn't let anyone get carry permits until within the last ten years when the state forced them to change their policy. This city and Rendell led the first major lawsuit against gun manufacturuers. Abraham, the District attourney stated that she doesn't like guns when she was interviewed after the ban. There is only one rifle range in the city that I know of and maybe 3 indoor pistol ranges that aren't anything talk about except for one in South philly.
Sin I could go on and on, but I'm going to end it here. DON'T MOVE INTO PHILADELPHIA!!
However Bucks, Chester and Montgomery counties are absolutely beautiful, have nice schools and many places to shoot. Pa is a gun loving state for the most part and a great place to live, but the city is a country all it's own. Good Luck