Good morning Love River,
You are in need of an eCommerce shirt web store with a professional design and I am the freelancer who can deliver!
Of your examples Spiritual Wear Tees has the best user interface but is meant for fewer products. If you have a lot of inventory I would go with the design similar to Air Wave Store. Another factor would be the product images. Do you have larger images (400px in width or higher) or smaller images?
All my work comes optimized for performance and search engines (SEO) included. I have submitted sites which have received up to 1.5 million unique visitors within the first month.
If you need assistance with the domain name/website address and/or web hosting please let me know as I provide solutions for that as well through trusted provides such as GoDaddy and SiteGround.
I provide a full eCommerce solution of Shopping Cart (Back end to manage orders, products, accounts, etc) with integrated Web Store (I can integrate any design) and Payment Gateway (PayPal by default, free API for any other). There are no maintenance charges/fees and I provide free support for the life of my work.
My bid cost/time is not set in stone and can be negotiated depending on your needs and/or requirements. Please feel free to reply with requesting a different cost or time frame.
I am sending a message to your Inbox from WDWMKR with details. Please review and I hope to hear from you soon!
-Sean