I think you should have an about us page, people want to know who they're dealing with.
4-6 weeks delivery time is going to be a problem whichever way you look at it. You'd have to be a tenth of the price of someone else for them to buy with that sort of delivery time.
I think you need a rethink on this personally.
I agree with Lawrie, 4-6 weeks delivery is too much and "About us" page is a must. I've reviewed your store and I have a few more suggestions on what to improve:
Your logo is hard to read even on a desktop, I think you can enlarge it.
Social media links should be opened in a new tab as you need your potential customers to stay on your page and not to be redirected elsewhere. Here you can find how to do it.
You can remove the "Powered by Shopify" sign, here's how to do it.
I couldn't find any information on the shipping prices. Customers usually want to know the shipping fees before they reach the checkout so it might be useful to include it (or make it more visible if it's already there). The best way is to create a separate shipping page with all the necessary information.
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best of luck,
Reselling is a tough gig. Online you are competing almost entirely on price - and then once you've cleared that hurdle, you still need to earn trust, which is hard to establish, though it sounds like your facebook page gives you a head start.
It is still possible to succeed with this model. Here's an article where I lay out the pros/cons as well as the success factors.
Hope that helps!