Small to medium-sized enterprises spend between $5000 to $10,000 per month for Google Ads, while large retailers can put in up to $50 million on paid search as long as they deliver results. You can ensure your budget is serving to the right people by placing ad scheduling, device targeting, keyword targeting, etc.
It is better to work with a paid search specialist who can drive the proper use of the budget so that you do not overspend.