Conversion rate into what? Enquiries? Actual sales?
4.53% in total is VERY high for the web full stop, well done if you’re getting that on sales
My online store selling motorcycle decals is about 1.15% average, although certain keywords perform better than others, scooter decal related keywords seem to be around 3%-50% conversion rates, although generally you’ll find the "long tail" keywords tend to have higher conversion rates as people are specifically looking to buy rarther than just browsing
As for actual sign enquiries I’ve never really monitored it for them, just separated out the 2 websites last week so I can monitor it more accurately and optimise each site specifically for their purpose