Is this a good stratagy to scale? (Voice AI)

I'm launching my AI voice assistant business by starting with cold calls to land my first client. My pricing model is:

$2,000–$2,500 upfront setup fee
$250/month ongoing subscription (with overage charges based on call minutes)

Once I close that first client, I’ll reinvest 100% of the upfront payment into paid ads (primarily Facebook and Instagram) to scale quickly and acquire more clients. I personally believe TikTok ads aren't ideal for this type of B2B service — they have reach, but not necessarily the buying intent. That said, I'm open to being proven wrong if there’s a solid strategy behind it.

For the first 15–20 clients, I won’t pocket any of the upfront setup fees. Instead, I’ll use them to fuel ad campaigns, while retaining the monthly recurring revenue for myself.

To scale, I’ll raise the upfront price every 3 clients, which allows me to reinvest more into paid traffic while increasing perceived value.

Why this model works: