I've never price matched at Walmart before, but this past weekend I was too tired to drive across town to Aldi, so I decided to go several blocks & price match Aldi's produce prices at Walmart. I found it to be an extremely easy process. I simply went in, grabbed the produce I needed, & had the Aldi sale flier handy for the cashier while checking out.
I was able to get the pineapples & cantaloupes for $0.99 each, strawberries for $0.99/lb, & grapes for $0.89/lb. I'm sorry to say I didn't pay much attention to the existing produce prices at Walmart, but I do know the Walmart price for pineapples was $2.25 each, so that alone was a great savings.
I was told that Walmart cannot price match produce prices if they are priced per tray (Aldi had a 4 count tray of pears for $0.99), they need prices per lb. or individual prices, but other than that, price matching was a piece of cake. I'm not sure it's something I'll do all that frequently, but for days when I'm just too worn out to drive across town it's a great alternative, especially as I currently like to eat an entire pineapple in one sitting!