The fact that tokens aren't free will limit the number of unserious requests. Email is free, and so there's a lot of spam emails sitting in my inbox, but tokens aren't.
On the other hand, op said he had wanted to do this for years but never had the time / ability. We can probably assume any increase in unserious requests will come with an increase in serious requests from people paying for the tokens to get the quotes.
On the other hand, op said he had wanted to do this for years but never had the time / ability. We can probably assume any increase in unserious requests will come with an increase in serious requests from people paying for the tokens to get the quotes.