Prices from quantity to price level

Hello. Products have 3 price levels (retail, wholesale and dealer). Circumstances so happened that some products had quantity settings added for wholesale prices, but this was not necessary. I can’t understand how one can filter or identify such products relatively quickly (since reviewing all 15,000+ products is not a very good option). How can you filter, or can display in a list of products in some column, or upload to a file, or export products, so that you can see whether the price is set based on the quantity for the wholesale price or not. Please tell me.