Build it yourself. Try the free versions of either Beaver Builder, Elementor, SiteOrigin or one of the countless other WP drag ‘n drop pagebuilders.
Most of the Theme Forrest themes are overbloated eyecandy that is poorly coded, on average, or have a gazillion layout options that you will never need.
Once the average buyer starts to add his own imagery to the Theme Forrestfire theme they bought, the whole thing usually starts to fall apart at the seams. Hence the ridiculous amount of “set your theme up like the demo” gigs on that certain website that creates the illusion that people can have the next generation Facebook build on WP for a budget of 30 US$.
Go ahead and try it yourself. Webdesign is not rocketscience. Just follow a few basic design principles and make sure to use really, really great product imagery. This unless you sell a 4 dollar product that ships in about 6 weeks time from China to the US.
(Side rant: All you US Drop Shipping IM’ers doing that are sure as sh*t helping out your POTUS making the US great again. Not.)
Hope that helps in answering your problem.