We are currently developing a marketplace in Arcadier (https://www.arcadier.com/)
Custom code can be written in HTML and JavaScript to customise features.
Some of the additional bits we want to do are;
1) Allow users to bulk import items into their shop via a csv file for example - currently users have to do this one item at a time
2) Colour and display changes
3) Potentially integrate Klarna (https://www.klarna.com/uk/klarna-shops/) and Apple pay (Depending on complexity)
4) Allow users to 'Make an offer' for an item
These are our initial thoughts but there may well be more.
We require someone who is able to code the above examples .
Please can you give an estimate of how long you think it would take to complete these tasks. We don't expect an exact figure as we realise it may be difficult but an estimate is useful for us.