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I have a alchemist player who will take the promethius discovery and wants to make multiple constructs:

Questions:
Price is covered in the bestiary, is this set?
Is he limited to how many constructs he can control?
If he makes them robots does he need a special feat?
Do constructs act like companions or use tricks?

Anything else would be appreciated. If the concept is legal then please post a link to the rule. I do not mind this in my campaign if the game designers already balanced it out.

Thank you.

I apologize if this has already been answered but I could not find specifics.

Situation:

Players:
1 Level 3
2 Level 4s
2 Level 5
1 Level 6

APL=27/6=4.5

Game is T3-4; Out of tier : and T6-7

Case 1:The group plays up to T6-7
how is the cash rewards resolved?
the three lower at T3-4 gold, the 2 at 5th at out of tier gold, and the 6th at T6-7 gold?

Case 2:The group plays down to T3-4
how is the cash rewards resolved?
the three lower at T3-4 gold, the 2 at 5th at out of tier gold, and the 6th at T6-7 gold?

I just want some clarification. If someone could quote an actual publication or reliable source to use I would appreciate it. There seems to be some discontinuity in our PFS and I want to do it the right way.