I sold mine last October...after I bought an RV-4. You really need to want a Swift to buy one though. They fly very nicely with great control harmony and very responsive. Unfortunately, the smaller engines C-125, C-145/O-300s are
NOT speed demons and do NOT do well with high density altitude unless they have lots of room. The price on Swifts has dropped drastically in the last ten years. Buying is the easy part as there are typically a variety with different engines/canopies/avioinics/modifications etc at any given time...typically more than there are buyers. Despite taking over a year to sell mine (wasn't in a hurry and was still flying it), I took a bit of a loss to sell it because there just weren't that many buyers.
They aren't hard airplanes to fly, but they do have a few quirks one must understand and be ready for. One is ineffective rudder on the ground. If you're the type who must push the yoke/stick forward to get the tail up immediately, the Swift will quickly tell you she doesn't play that game and will immediately head for the left side of the runway...P factor, torque and gyroscopic presession will overpower the rudder. Throw in any left crosswind component and it gets worse. Losing it on takeoff is one of the biggest accidents in the Swift. I've literally used full right rudder during takeoff and had to drag right brake to keep it straight before. The problem is, it catches most people off guard.
The Swift does NOT like to three point. It can be done, but it is best saved until you are highly proficient. I did them mostly on grass. There are a variety of reasons for this beyond the scope of this response, but suffice it to say, the Swift Association recommends ONLY wheel landings.
Unless a Swift has gross weight increase mods, the original 1710# can be quite limiting. My Swift had none and empty weight was 1237...and most all have gotten heavier over the years with additional items. That is only 473#. Stock fuel is 28 gallons for 168# leaving you with 305# for you, passenger, bags. Throw in a GW increase and you can be legal, but performance is just further degraded without big engine,Cont or Lycoming 360 series. Unfortunately, with the exception of the Cont O-300E (which is rare), there is no provision for constant speed prop. My 59" which was a slight, but not full climb prop helped me flying from a 3100' grass field small trees on one end and tall trees on the other. Any rides given were on cool day with half fuel or less.
The Swift Association/Type Club is one of the best out there. As someone mentioned, they are TC owner and support the plane well, brining more new production parts online as possible. There are still parts which are HARD to find though. Owners are typically very loyal and I know many who own more than one Swift and even more who have owned theirs for 25-50 years! Most everyone I ever met was extremely helpful.
Be sure you know what you are looking for and at with a Swift. It is one of the most highly modified airplanes ever built. Someone with a good working knowledge of the plane is a huge plus when looking at one for purchase. Over the years, many have mods which are not documented and therefore not approved. Many people have bought Swifts who later learned their A&P/IA or even several would not sign off an annual due to mods/poor logs.
Again, I loved mine and few it several hundred hours. After awhile I went the experimental fixed gear route due to ease and cost of maintenance. The Swift annual was fairly time consuming with gear swings (which require a special short jack). Also the RV-4 is significantly faster and even more fun to fly. The Swift will do passable acro in the form or loops and rolls, but intentional spins are prohibited.
So, my advice remains...buy a Swift because you badly want a Swift for what it is, which is a beautiful and unique antique airplane which draws attention wherever you go. But like most 70+ year old airplanes, it isn't a load hauling family airplane.
Here is a good primer to read before purchasing any Swift.
http://swiftmuseumfoundation.org/buying-a-swift-monty-the-answer-man-archives/