I think it's interesting that the PPS website says "Expected price" and "Expected Availability" for MMR.
While it's obvious that deadlines can/will slip, the wording seems to open the door to a price bump. Bizarre.
I have no problem pre-ordering with a 10-20% down payment (did this for STLE and later decided to cancel the purchase). Paying 100% upfront for products with very fuzzy delivery dates isn't for me…did this with WOZ and ultimately bailed after many missed deadlines.
Patience is goodness in this hobby…whenever I'm patient, the right pin finds me If I decide later on to get an STLE, WOZ, MMR, I'm sure they'll be around @ a sensible price.