Noooo, nothin' like that. But I loved your description.
It seems though (in all seriousness) that the OP's query has gotten responses that, when taken together, describe something like a U-shaped Laffer Curve where, with vig on the vertical access, you pay more with individual strikes, least with a two-strike combo, maybe a hair more with a BWB, and then *more* vig -- possibly back up to the individual-strike level, with an IC.
Hmmmm. That's quite an insight -- been doing this for many an expiration.... and have never had cause to put it so specifically. Huh.
Thanks, OP! (And Sig!)
Just to ask a dumb question. If you try to trade a combo let's say for 17 because you want to buy AND sell 17 calls AND puts, is your proceeds net debit(credit) X 17? So in OP's case, let's say he's sold 17 IC and the credit was 0.52, he/she's going to get 17 X $ 0.52 X 100 = $884 credited into his/her account?