I would generally steer away any provider advertising as 'boy' or 'boi' regardless of their published or actual age.
Nothing against them personally, its just not the 'persona' i am looking for. But surely there have their market.
Unless he is a newbie, any seasoned (or rather experienced) provider is savvy in approaching $$$ topic. If he didnt mention it, then highly likely all good. In this context, he is the businessman whilst you are the customer. He knows better IMO.