(amber k, is this you? I referred you to two plays, wondering if this is one of them)
Sorry - more qqs -
Assume, at 99-seat, this is not union (altho it may be) - [if you are getting health weeks there is MUCH more room for compromise on the rate].
Assume you are running lights? Are you also running sound? How complex is the show, AND how much experience do you walk in the door with. Props: are you shoppping for/maintaining/ purchasing during the run? Do you have a PA? Are the actors getting minimum 99-seat pittance or have the producers offered them significantly more?
I think, for 99, if you are an experienced SM you shd take no LESS than $50 per show and work out a fair rate for rehearsals and tech week based on how much work you will be doing aside from normal SM tasks. (And, do you have other work - a day job - you will be giving up?) Also, make sure you deal with parking issues before you make your decision, and think abt gas money. I base my 99-seat rate on what I can't earn in other ways because of the time and work commitment to the show combined with how far away it is and how much I want to do it. If there are perks - free adjacent parking, a great cast and director, travel outside of rush hour, acknowledgement of what I bring to the table (you'd be surprised at how far a "thank you" can get them), I am willing to compromise (within reason).
If this is a resume-builder, taking less is reasonable, but keep in mind your time and skills have value, and a good sm will save the producer a lot of money in the long run. Does this help?