Re: iPod touches
Yep, just like D said. Apple product prices are regulated and will be the same everywhere if you're getting a new device. Some places like Walmart and Best Buy will offer $10-20 off promotions from time to time, but other than those offers the price is the same everywhere.
Getting a used device is much different. Prices on used devices vary wildly. There are literally hundreds of places to get them from and prices. If you're going used, look around and find a good price and make sure you buy from a seller or retailer you trust.
Tappin and Talkin from my iPhone 5