I imagine we are talking about some sub-penny scam stock on the Pinks here. Your assumption that there is a line is incorrect. While there may be a line for the MM where your order is sitting, there is no reason why someone else can't trade the same price you are bidding or offering. This is a dealer market. The rules are a lot friendlier to paper than they used to be, but you must bear in mind that your purpose in this grand scheme is to supply promoters and market makers with income.