I am convinced that there is more work for you. You said your area has car dealerships and banks. It almost certainly has a post office. These are all shopped - its a matter of finding the MSC's. I *do* suggest singing up for all of the "15," not just four. @JASFLALMT is correct: It is possible that the other MSC's with work in your area have already assigned it for this month - if there is another shopper or two near you, s/he could be good at grabbing much of it as soon as it is available.
Out of the Top 15, if you are not registered with: Intellishop, MartizCX, Ipsos, Ath Power, and TrendSource, you all almost certainly missing out on shops. (I'd add MarketForce and BestMark, but you are already with them.). I have not registered with Stericycle (I applied two years ago and never heard back) or GapBusters (I just haven't been Interested). "Beyond Hello" is now "See Level" and might have a few things for you. Bare International could have work near you - I used to do a lot of them, but I have found other MSC's fit me be better - good company. I've never done a Coyle or Sentry shop - they don't fit my preferences. I've not worked for Sinclair - they seem to have shops I like, but only in other parts of the country.
@MrsChaney wrote:
I signed up for 4 of the companies MFJohnston recommended. I was not surprise when there were no shops available anywhere within 100 miles of me. After 4, I gave up. This is why I stay with MF. I don't live in a rural area. Just a small town near some larger towns. The nearest big city is 2 hours from me, but I'm not willing to travel that far for shops. Oh well.
Hard work builds character and homework is good for your soul.