I can't say whether that show fudges numbers or not, but assuming all the numbers are true, and assuming it is as "easy" for them as it appears on television, you should consider this.
1) Both husband and wife were/are real estate agents in the general area where they now invest, which means they both are extremely familiar with the prices, trends, rental rates, and everything else real estate related in that area.
2) The couple has access to hard money lenders, their parents (on both sides) have stepped in to loan tens of thousands of dollars when they go over budget, and they also max out their credit cards for tens of thousands of dollars.
There are other factors, but hopefully you get the point. Saying it looks easy for them on television is like saying it looks easy for professional hockey players on television. They have spent a long time honing very specific skills to make it look that easy. If you haven't put in the time, don't expect it to be easy for you. And don't expect it to be completed in 30 minutes.
Also, regarding my second point, make sure you have the capital to see a job through before you jump in the deep end. I don't recommend your first flip be a $300,000 purchase needing significant renovation.