Wordpress/Avada/Woo site re-design

There is a provisional web site that I have put in place for my small solar systems business. We specialise in niche markets in which we have hands-on experience: sailing yachts; canal & river boats; houseboats; camper vans; and small off-grid houses. As Plugins, I use Google Site Kit, Brevo, and Squirrly all of which are central to my plan. Site Kit is up and running; Brevo is installed with good lists and segments but not yet linked with forms to the site.

The existing site I believe not to be sufficiently appealing to visitors, but the overall structure I think is roughly right, and is certainly good for SEO optimisation using Squirrly.

What I am looking for now is some rough idea of price together with examples of work that you have done recently. I don't mind if you show sites selling things unconnected with solar energy, but please don't refer me to sites that you did not develop personally.

Because I need to give a budget figure, I have done so, but please also note that I will take a decision in 2 phases: 1) Proof of concept; 2)Final agreed price. In short I will pay to get to see a draft design, and only then give the go-ahead for the complete project.