Merge or compile data in excel

Looking for an excel data aggregator with novice/intermediate skills. Your job is to merge prices from different excel files into one. In other words "finding the cheapest supplier" for the same item-SKU. VLOOKUP is your key tool. Ability of converting data to necessary formats for vlookup to work properly is a must. Care, agility and attention to detail is the minimum we require. No mistakes allowed. Wrong data aggregation might convert into financial losses.
We have 1-2 working days for the files to be aggregated after each new request. Approx. 20-30 individual requests monthly.
Ready to instruct during a video call.
Perfect English is a must. Spoken and written.