Advertising at FB/Inst IT camps for children in Seattle

Advertising expensive IT camps for children in Barcelona. The price of the camp is approximately $4000-4500 per change for 2 weeks. The advertisement was set up with the purpose - conversion and led to the site. The website was full of information, the camp program and the price. The lead is as relevant as possible.
In 30 days of promotion, 106 ice were collected at the price of $7.5 per ice and all spent $800. As for high-marginal expensive service with a price of over $4,000 the price per ice in $7,5, with a total of 106 ice is a very good result.