STEEL CERBERUS

Looks like a giant dog-shaped mech with three heads. There's a gunner console in each head. The central head is equipped with drill fangs that can bore through an enemy mech's armor so our melee fighters can board it. The other two heads just act as hands, grabbing things or doing unarmed attacks. The pilot's control room is just where the three necks connect with the chest.

Size : Colossal II
Power source : Steam
Payload units : 32
Height : 50ft
Space/Reach : 25ft by 25ft/25ft
Crew : 8
Firing ports : 21
Hit dice : 60
Hit points : 330
Critical Thresholds : Green, Yellow 165, Orange 83, Red 33
Base initiative : -2
Speed : 70ft (fast legs)
Maneuverability : Average
AC : 2
Hardness : 14 (Steel, Colossal II)
Base melee attack : +3 (Plus the gunner's Mech attack bonus and dexterity)
Base ranged attack : -2 (Plus the gunner's Mech attack bonus and dexterity)
Base CMB : 27 (31 for trip) (Plus the gunner's Mech attack bonus and dexterity)
Base CMD : 35 (39 for trip) (Plus the pilot's Mech attack bonus and dexterity)
Unarmed damage : 3d6+11
Drill Fangs damage : 1d10 +11. Ignores hardness.
Trample : Largest target huge, safe target large, damage 5d6
Saves : Fort 0, Ref -4, Will -
Abilities : STR 32, DEX 6, CON -, INT -, WIS -, CHA -
Mechcraft DC : 42
Base cost : 5600GP
Total cost : 8308GP
Labor requirements : 7052 man hours


PU usage :
3 PU : Living space for 3 small creatures (Zom, Malky, Galen)
8 PU : Living space for 4 medium creatures (Alek, Jessy, Talis, Ennoria)
8 PU : Living space for 2 large creatures (Roe, Andreas)
3 PU : Extra living space just in case
8 PU : Onboard Weaponry (1 huge bore puncher, 1 huge steam cannon)

Gunner (Central head) : Alek, being the only one who can use mech weapons
Gunner (Left head) : Anyone with a decent dex and BAB
Gunner (Right head) : Anyone with a decent dex and BAB
Pilot : Anyone with a decent mech pilot skill
Up to 4 copilots (optional) : Anyone with a decent mech pilot skill



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Price calculations :

BASE PRICE :
7680 man hours of labor
4800GP of materials
800GP steel armor

TOTAL BASE PRICE : 5600GP + 7680 man hours

OPTIONS :
Fast legs (+5%)
Steady feet (+10%)
Linked weapons (2 bore punchers) (+0%)

TOTAL PRICE AFTER OPTIONS : 6440GP + 8832 man hours

INCREMENTAL DOWNGRADES :
Base labor percentage value : 1280 man hours
Base material percentage value : 933GP

-Only 60HD : 50% Difference percentage value = -466GP, -640 man hours
-Only 32STR : 50% Difference percentage value = -466GP, -640 man hours

TOTAL PRICE AFTER DOWNGRADES : 5508GP + 7052 man hours

WEAPONS :
Drill Fangs : 1 Huge linked Bore Punchers : 800GP
1 Huge Steam Cannon
FIXED COST :
2000GP steam

FINAL CONSTRUCTION COST :
8308GP + 7052 man hours

Assuming they do the work with only normal laborers, say 50 laborers, they can reasonably do the work for about 150GP in 17 days. Probably less since it looks like they're very automated, but either way that's still an investment they have to defray.
So the mech costs them probably around 8500GP to make. Then you add the markup, since I expect they'll want to make a benefit.



This leaves the problem of crew. A colossal II mech is the minimum size to fit us all, but the crew requirements mean we'll all need to be working as crew to make it work. The solution, of course, is tiny mecha-dogs running around the big mecha-dog.

Mecha-Pomeranian (Tiny Animated Object)
Base price : 2000GP
Zom's Craft Construct feat : *0.5 = 1000GP
Zom's Extraordinary Artisan feat : *0.75 = 750GP
Galen's Eldritch Smith : *0.95 = 712.5GP

So, using Galen's internal forge, Zom can make 4 mecha-pomeranian for 2850GP. This reduces crew requirements to 4, much more workable.

And finally, the problem of coal. To stop the mech from becoming a money sink, we'll ask Aldior to craft a Chest of Preparedness for us. Assuming Zom assists him, and he doesn't charge us anything extra for it, just the construction costs, it will cost :
Chest of preparedness
Base price : 5000GP
Aldior's Craft Wondrous : *0.5 = 2500GP
Zom's Extraordinary Artisan feat : *0.75 = 1875GP

Generating enough coal to operate the mech constantly will use up 2 of the Chest's 10 slots. The third slot can be used to generate food, the fourth for water. The other 6 slots are up for grabs. I'm thinking the following :
Slot 1 & 2 : Lots of coal
Slot 3 : Lots of food
Slot 4 : Lots of water
Slot 5 : 2 tanglefoot bags, so Zom can keep his Webber charged
Slot 6 & 7 : Cauterizer fuel, so we can treat wounds inside the mech without running out of uses
Slot 9 : A healer's kit, so we can treat other stuff like disease and poison without running out of uses
Slot 10 : 100GP of spare parts, just in case we need to build a cheap temporary thing

The Chest of Preparedness can generate all those things every day, but they only last 24H.


So, we're up to a total of :
Base mech : 8500GP + Markup
Cyberdog workers : 2850GP
Chest of preparedness : 1875GP, assuming Aldior doesn't mind selling it to us at the construction cost without any markup


FINAL TOTAL : 13225GP + Mech's Markup