I sold door to door for Terminix this last summer and I'll try to give you a pretty good feel for how it was. The bottom line is that, no, I would not do it again. They will try to pitch you and say "you'll make X amount of money," but unless you are in the top 5% of the company, its not likely that you'll make copious amounts of money. I barely broke even over the summer. I was promised that I would get paid a lot at the end of the summer, and I recently talked with my boss and it turns out I'm getting a $700 check in a week or so. I was (not exaggerating) expecting about 7 or 8 thousand at the end of the summer. I wasnted to buy an FS700 at the end of the summer. I'll be fighting it, but thats how my situation stands right now.
The thing is you are working with a bunch of sharks - what they don't give to you, becomes their bonus and quite often folks get greedy. Also it really kinda sucks because you become an asshole too - you have to in order to survive.
Last thing is, the work hours sucked - I worked 75 hours + per week.
I'm glad I did it, just to say that I was perseverant enough to finish out the whole summer, but like I said I would probably never do it again or suggest anyone do it.
PS people are dipshits to you on the doors too