If you need support from Yola please contact us via firstname.lastname@example.org or make use of our live chat service! We are working on a new approach to community-based support and during this transition period we are not adding any new threads to this forum. Many thanks to everyone who has participated over the years and we look forward to unveiling a new peer-to-peer support system soon!
You can't upload this to a stndard Yola page using their e-com widgets as they are.
Yola will be releasing their new e-com system soon and this will allow such a task.
In the meantime I suggest you have a look at ecwid.com and this will allow your needs. Free for less than 100 items and approx $16 per month for more than 100 items. Files can be uploaded as excel csv or tt file among other types.