I have done quite a bit of work for Intelli-shop....
* I rarely (like never) take their jobs at their initial offer. For the most part, you'll be working for less than minimum wage if you do. If all their shops get picked up in your area at that offer, move on. However, if their shops do not get taken, the payment offered will slowly go up until the do get taken. In my area, the compensation can be more than adequate after pay has been bumped a few times.
* They do get a little nit-picky on their scores sometimes... Keep your sentence structure in narratives simple - some of their editors do not do well with complex sentences structures and will ding you for perfectly good sentences.
* They do have a wide variety of shops - fast food, comic books, apartments, basic new vehicles, super-high-end ($200,000+) vehicles, wire transfers, cable companies, and more. They are a decent company for getting an idea what mystery shopping is all about.
* I have found their schedulers reasonably easy to work with - though they do not have much room to negotiate compensation.
* They offer the same compensation nationwide for the same shops and struggle to recognize that $20 means one thing in a place where minimum wage is $8/hr and the average home under $100K and a totally differen thing where the minimum wage is $15/hr and the average home is $600K....
Hard work builds character and homework is good for your soul.