They tricked my wife into thinking we got round-trip tickets to Orlando for our family of 7 for only $540 with Frontier. They took payment and immediately after the payment told her now you have to choose if you are bringing bags and do you want to sit together with your kids? When my wife said yes, they told her it was going to be an additional $1,600. My wife was shocked and said that's more than Delta we normally fly with and the rep pretty much told her that's fine if we didn't want to continue, but we would forfeit our $540 we paid for 3 minutes ago.
My wife came and found talked to me and we had CheapDealsFare send us information about what we just purchased for $540 and what else would be included for $1,600. To not lose the $540 we decided to go forth, but at that time they said the flight had booked up more and now it would be an additional $150 if we want seat selection. So naively, we were conned into more money. (later I went and looked up our flight and both ways it's only about 20% full… mostly empty! Liars!)
When it came to our flight, we found that one of my kids didn't have checked luggage paid for (either way) and that we were going to have to pay $69 x 2. We showed Frontier our written confirmation from CheapDealsFare showing "1 Free Checked Bag/passenger" included in our rip-off price package we paid, and Frontier basically said too bad, they are not affiliated with CheapDealsFare. And they were pretty rude about it too. They suggested we book directly with them next time.