Firefly Car Rental (Any Rental Experiences?)

Noticed Firefly appeared today at car rental savers website. Anyone heard of this company. Any additional nickel and diming when renting adding to the cost? Are the cars in good condition?? Got an ok price for a 10 day car rental (Compact with tax $189.10 Total early December) Thanks for the feedback!

I used them at the end of October because they were much cheaper than anyone else. They share the Dollar area. No kiosks so I had to wait for a clerk. 2 clerks on duty at 3 p.m. but 3 customers so I waited while they did the standard upselling. I think the clerk ran outside to get the car for the lady in front of me. My car had 48000 miles on it. On the return, I was told to go inside to checkout. I waited for the 1 clerk on duty to finish with the customer in front of me and when it was my turn, she said I should have interrupted her and she would have helped me out.