Hi,
I am senior iOS developer with +6 years of experience, I can implement details item view in 1 day and their is something missing or you need more features or modify anything can be done in the next day,
it is easy task.
even if you want to implement the main list of items and item details view I can do it in 2 days too or max 3 days but for 225$.
I have experience in swift and objective c.
regards,
Maha