I'm guessing that the 10x to 15x is for someone who is purchasing and looking to slowly build it or use it for recurring revenue. The company that is looking to

I'm guessing that the 10x to 15x is for someone who is purchasing and looking to slowly build it or use it for recurring revenue. The company that is looking to make the purchase might be looking to do a lot more with it (bundle it with their current products, etc) and it might be worth more than 10x to 15x. Ask them what they plan on doing with it. Also, how much work would it take for them to replicate?