They only thing I pay for is a WEDJ listing. Since I quit doing bridal shows, I'm only getting about 1 contract every couple of months. But even doing bridal shows, I still wasn't booking enough high end weddings to sustain the business, and killing myself booking tons of cheap ones wasn't really profitable either.
If I go part-time next year and raise my prices again, I'm thinking of simply paying nice commissions to coordinators and/or a part timer person to do sales for me. That way I'm not paying a dime for advertising that may or may not be working. It's something I wish I would have started doing a long time ago, but I can't risk raising my prices again to pay commissions right now.
I've learned to keep my overhead low, and if a salesperson can book my standard package for $2500, I'd have no problem paying them $300-$500 cash under the table. I think that's a pretty good incentive, especially for a student, a former bride of mine, a coordinator, other photogs/videogs, etc. If I'm part time, I'll have nothing to lose by trying it out.