I might be biased, but I’ve found that a quality, custom designed flyer works wonders for event sales. While web ads are great, they disappear once tabs are switched over to that YouTube video of cats jumping off of cupboards That said, a web ad that complements a flyer/poster/postcard, as long as it’s original…nothing wrong with that.
The nice thing about flyers is that they’re mini pieces of art that either get posted in visible, high-traffic locations, or they travel around the city (and sometimes further) for several people to see. The right look of a flyer is something that you know is unique. Not “speakers on the edges, champagne glasses in the middle, and confetti over everything”-type designs, but something done by a graphic artist or illustrator.
Free templates are great for your kid’s birthday party…but wouldn’t you want your event to stand out? Promoters are creative, unique types. I feel like that aspect of your event’s personality should shine through your flyer design.