Really? I redid almost my entire house plumbing using PEX and only spent around $500, that included the crimping tools, 2- 6 way copper manifolds, a valve on every supply circuit ( about 15 1/4 turn brass valves) and a washer/dryer hookup wall assembly. Not to mention, it's a lot easier to put together than PVC, very few 90* and no gluing
That is about what I estimated for our place.
We have a kitchen sink, dish washer, 2-bathroom sinks, cloths washer, utility sink, 1-shower, 1- tub/shower, 2-toilets, 3-cold outside faucets and 1-hot outside faucet.
That makes 20 separate water connections. I figure I could combine the kitchen sink and dishwasher on the same lines and the outside faucets on the same lines so I could get by with a 16 outlet manifold.
16 gang manifold $248.00
100' cold tube 48.69
100" hot tube 48.69
2-toilet adapter fittings 13.96
8-sink fittings 52.84
4-tub & shower fittings 10.08
4- dish wash & laundry 10.08
4-outside faucet fittings 10.08
crimp tool 48.63
------------------ total $491.05
My estimate for 3/4 PVC was $301.15 so the PEX is close to $200 over budget.
We only have a certain amount of money available to build this house and have to stay tight to the budget.
However, I may end up using the PEX anyway just because of how nice a water system it is.