I have Blue Apron and largely they're really good. It's surprising to see they aren't doing well, apparently?
For example, during the last 12 months at Blue Apron they spent $178 million on marketing, and acquired 387,000 customers (these figures are from their IPO). That's $460 per customer. Getting hold of customers is not cheap, and many of these customers are not loyal or are stopping the service after only a few deliveries.