If the browsing user selects one of the samples on the site (which is verified easily with a quick hash on the client side), why on earth are you processing it again? Load shouldn't be an issue here.
Honestly, users shouldn't even be able to ruin your sales pipeline by interrupting your pitch. Why let us enter any markdown? It's an example, you have a few representative samples, just take their output and hard code it and move on. As it stands now, I probably won't remember to come back so see what this is all about, and waiting for an email isn't really going to increase the odds that I come back.
Just some honest feedback for you. TL:DR: I was intrigued by the first page, put off by the unnecessary wait when you could've hard coded the response when a user chooses an existing sample.
Honestly, users shouldn't even be able to ruin your sales pipeline by interrupting your pitch. Why let us enter any markdown? It's an example, you have a few representative samples, just take their output and hard code it and move on. As it stands now, I probably won't remember to come back so see what this is all about, and waiting for an email isn't really going to increase the odds that I come back.
Just some honest feedback for you. TL:DR: I was intrigued by the first page, put off by the unnecessary wait when you could've hard coded the response when a user chooses an existing sample.