I would think at Dona Clara they would actually know a lot about what works, and what is available in Argentina. They are not like a Target or Aldis, where the hourly employees punch in and out and know little about the stock.
I have had very good luck learning from specialty retailers in Argentina- in areas as varied as industrial sewing machines, rope, leatherworking tools, cookware, kitchen knives, work clothing, electronic supplies, threads and notions, plumbing parts, office furniture, 3d printing, fabrics, nurseries, stone cutting, hardware, upholstery, or power tools- the retailers, the guys and gals who have worked in family owned businesses all their lives, have repeatedly made good recomendations to me, steered me to the right products, and, often, recomended cheaper choices.