cheapoair.com did a similar trick on me few years back. I searched flights and after finding my flight, I clicked book. waiting for few seconds with a spinning

cheapoair.com did a similar trick on me few years back. I searched flights and after finding my flight, I clicked book. waiting for few seconds with a spinning thing , I got error message that the airline increased flight price, and I have to pay the new price. So, I went straight to airline website to check their price, and it was lower than the first low price cheapoair showed me. since then, I always check direct pricing before booking