A comment by S.W. Anderson in the Hasselblad MF Mirrorless post got me price-checking medium format cameras, and it looks like the first generation Pentax 645D body only is currently going for $4000 in new condition at Amazon by Amazon actual. This is no longer available from B&H and Adorama. Amazon’s shipping estimate is 1-4 months, so keep that in mind if you need it to arrive quickly.
Or if you are a more adventurous shopper, there are a couple of eBay listings on it:
+ New Condition for $3150 with Best Offer Enabled (this is a private eBay listing for extra protection; ships from Los Angeles)
+ Used Condition for $2650 [CORRECTED!] (ships from Delaware; listing says used in-studio only with 3269 actuations)
+ the eBay listings above are from individuals, not retailers
In comparison, the latest model, the Pentax 645Z, goes for $7000 in new condition at B&H Photo (with 4% rewards = $280~) and Adorama (with 4% rewards = $280~). There’s also a 645Z Comprehensive Starter Kit that goes for $16,000 and includes three lenses (55/2.8, 90/2.8, 28-45/4.5, extra accessories and the protective case you see in the pictures.