What is the price of an online store in this situation?

Question

Online shopping

How much can you ask for a ready-made online store if: There is
only one developer,
Everything will be written in a clean, readable, cross-browser, eye-catching code,
With the best convenience and functionality,
Writing code without stealing, according to all the wishes of the customer,
Online vape store and everything for vapes ,
Development will last about 2-4 months
And the developer is not even 14 yet)))
Just an approximate price for such a project.

Answer 1

Everything will be written in clean, readable, cross-browser, eye-catching code,
with the best convenience and functionality,

The customer doesn't give a shit about it.
And how could it be otherwise?

Online store of vapes and everything for vapes,
Development will last about 2-4 months
And the developer is not even 14 yet)))

Any estimates are just a waste of your time.
All these pure cross-browser features do not affect the price.
How much you will NOT earn in these 3 months on other projects - this is your price for these 3 months.
Hypothetically - at least 100,000 rubles in the worst scenario.
In fact, it's higher.

Answer 2

given the lack of extensive experience, I think up to 30 thousand rubles.