I'm going to launch a collection with 15,000 nfts the background does the PRO suit me well?

@oozeias14 Netlify will request that you contact their sales team and discuss getting an Enterprise account.

You can see a discussion relating to it here:

Along with the end result of someone that did launch their NFT drop on a Pro plan:

I can save you some time though, if you can’t afford $2,000 USD a month, then you should host the project elsewhere.

In all cases, make sure you aren’t creating a situation that will put your hosting provider under excessive load or attack, and if you rack up a bill, pay it.