Semrush has a few pricing options, starting from $83.28 per month (when paid annually), leading up to $333.26 and upwards for larger business'.
You save 16% when paying annually, which is definitely useful to consider.
SEMrush Prices
You can read all of the information regarding pricing, and what exactly is included within each package on their pricing page, which you can find here: SEMrush Pricing