% baja de oferta más barata

01:31 Nov 17, 2020 

Also correct: 'reduction percentage', or 'reduction (price) percentage', if you want to apply Carol's Gullidge's sentence in the shorter version.

12:27 Nov 16, 2020 

That's what I meant in my proposed translation, I mixed the word order (sorry). Thi seems to be some kind of bid shading practice.

10:29 Nov 16, 2020 

looking not only at the lowest bid, but also at the amount it has been reduced by

10:27 Nov 16, 2020 

...of the cheapest offer.? I.e.,

But I have no qualifications in this realm...

This is the way I see it anyway, and I have to say that when shopping in the Sales I'm never interested in reductions of 25% or less! Unlike these people, my instincts are to go for the item that was originally the most expensive, but with the most dramatic price slashes. 50% arouses my interest, but 80% is hard to resist :)