Like with nearly every product / service / purchase, nowadays you have two main choices to purchase them, either online or offline. Which one will give you the better deal when it comes to buying a mini oven depends entirely on your circumstances.
Buying a mini oven offline
That means basically traveling to the next brick and mortar store that has a decent range of different models in store. Pros are that you can actually see the product that you are about to purchase and that, hopefully, you will find a knowledgeable shop assistant that can answer all your questions. Cons are that you might have to travel quite a bit. If you don’t live in a big city, to find a store that has a reasonable range of mini ovens in store can be difficult and take some time. And to find the best deal, you would obviously have to visit more then one shop and that also can be time consuming.
Buying a small oven online
As long as you stay with a reputable retailer, such as Amazon, you don’t have to worry about warranties and the like. Shopping online allows you also to research a multitude of products from the comfort of your own house. Only con, you don’t get this “hands on” experience and don’t see your prospective purchase in situ.
It boils down to time saving versus actually seeing and handling your possible purchase. Which one is better for you depends entirely on where you live. If you live in a big city with a lot of hardware and department stores to choose from, offline buying might be better for you. If you live in a more isolated area, buying a mini oven online might give you actually the better deal.
But which one is now the better deal price wise, you ask? I honestly can’t tell you. In general I find better deals online because I can take my time to make an informed decision. And when I count in time and travel expenses, online shopping wins hands down. But if you live opposite a major household items department store that runs regularly promotions, your mileage might vary.