Shopify Rebuild & Pricing Menu

My Shopify catalogue sits at roughly 150 products and is already uploaded, but the site structure is still bare-bones. I need the store rebuilt so shoppers can browse by price instead of scrolling through a single list.

Here’s what I have in mind:
• Create collections
• Tag or otherwise assign every existing product to the correct collection.
• Add those collections to the main navigation as a standard dropdown menu, ensuring clean, intuitive ordering.
• Tidy up any residual theme or navigation elements so the new structure feels native to the shop.

Everything will take place inside Shopify using its native collections, Navigation settings, and (if needed) minor Liquid edits rather than heavy custom code. The finished store should let customers filter by price from the first click, and every product must appear in exactly one of the new categories.

current location is https://books-by-jc-reardon.myshopify.com/

we are open to ideas. These are another 300 plus books to upload once the site is completed.
We will require on going maintence.