...I see your point, what I was saying was purely from my perspective. As 200 is 300 less than 500 I wouldnt chase. I would have a solicitor handle the small claims procedure on my behalf as it is time intensive and from experience, is more likely to result in a successful outcome if handled by an experienced professional.
Overall, and again this is only my perspective, the benefit of shining (to me) is no single customer can get into you for a material amount of cash and before they dissapear, the two or three cleans you do before they go skint or avoid payment i would put down to experience.
Having said that all the best in getting paid out.