My widebody build (cape cod) is now up to an estimated (italics - yet to buy...) ~$22K, $7k over my planned $15k budget:
ply/stingers 2000
epoxy 840
glass 500
paint (awlgrip) 500
2022 Merc 60hp 7600
Merc parts (throtlle, harness, prop, etc) 1500
Merc Install 1000
steering/wheel 500
gas tank 500
bilge pump 100
switches/panel 200
battery/cable 300
radar/MFS 4500
trailer 2000
TOTAL: $22,040
A new similarly sized center console is between $40-70k, but then you can't... 'build a better boat than you can buy.'