I think your best bet for local sales is to do babywearing workshops (either for free or a small fee that could be applied to a purchase) and then sell the carriers that you demonstrate. It's hard, IMO, to strike that perfect balance of 3 orders a week and just stay there. While it may not seem like a lot of orders, it will require drumming up business and then when you do drum up business it can be hard to control how much you get. It's not likely to be even like that either, you will have rushes and then slow times. It's also a lot of work to sell yourself direct to the consumer (as opposed to selling more in bulk to a store that sells retail) and without an ecommerce website (or at least a very informative brochure site with many pictures and excellent instructions) you will likely spend a lot of time in emailing with people about the details of your carriers and sending them pictures and/or fabric swatches. This is the nature of any custom (made-to-order; that is what you were thinking right? or would you have stock made up and only sell what you feel like making?) sewing work. A lot of back and forth with the client. Which just means, don't sell yourself short by not considering the time you spend with a client to get their custom carrier made, not just your sewing machine time. It can be hard to strike a balance between truly compensating yourself for your time and being able to charge a price that people will pay.
Personally, I was initially selling my mei tais between 55 and 75. But this low end is really just marginally above what a wholesale price for a mei tai should be, IMO. Mei tais are simply tedious to make and the bulk of their cost is in the labor, not the fabric (I pay almost 3x more for my labor than I do for fabric per carrier). So I decided to kind of go all out and go away from the small, make-it-to-order model (because I also hate deadlines when I know a customer is waiting for something) and go for a premade, smaller selection of fabrics and attempt to go more mainstream (via upscale boutiques; if people will pay how much for a Bugaboo, I have to think there is a wider market for my mei tais, even though they cost more than all other mei tais--which are not cheaper to make I don't think but just underpriced?? I don't know). A very different path than a small WAHM home sewing operation and riskier, but I decided to give it a shot, give it a few years and see.