What are some tips for success when buying a couch online?
I would recommend trying the sofa out in person before buying if you can. If you are buying a new sofa online, which to be honest is by far the easiest option these days, then just check the returns policy first.”

When you get to the store, conduct these simple tests: To test the strength of the frame, lift one corner of the sofa off the ground (the nearest corner should lift along with it). If it doesn’t walk away. Then, then sit on the front edge and listen for creaking noises (this indicates the springs are poorly installed). Ask questions , is the frame made of ? What type of foam and fill do they use 
in the cushions ?Lastly, sit on the sofa and lean back to test the comfort and durability of the cushions, and make sure the dimensions work with your body.