I paid about 18K. I bought a 'Good Neighbor Next Door' House (Half price HUD houses for teachers, police, EMT, firefighters). I love my house, and I'm quite sure that it's been the best financial decision I've ever made.
Paid 24K, and received another 6K back, from a different federal program. Built in 1949, 1200 sq ft, 3 bedroom/1 bath. 80K worth of remodels via an FHA 203K. Wanted to DIY all the remodel work, but the FHA HUD inspector would only approve me to do half of it.
Refinanced @ 3.5% without PMI. Worth ~250K today.
I rent the other two bedrooms out at $500/mo, each.
Editing to add that it's a single family, detached ranch.