If you are looking for a small desktop PC, do not ever walk into a small desktop computer shop. These places are full of salespeople and high pressure sales tactics. The PC market is just huge and there are always going to be people trying to sell you something. You will find that they are pushing the prices on PC's right out of whack because of competition in the market. They do not even care if the product is not cheap; they just want to make their sale. Do yourself a favor and save yourself time and money by shopping online.
I think the first thing you should look at is if the store is legit. There are a few things you can look for to make sure that the website is not a scam. Check out the return policy before purchasing your computer; this is very important. Many stores have a very high return rate because their customers were unhappy with the purchase.
Look up user reviews and make sure that there are real people who have bought and used that product. It is very easy to find a bad review online because of all the haters on the Internet. This is one of the most important things to find out. You can also try to find customer service forums to see what people are saying about the shop. I am sure you will not find a lot of people saying good things.
If you do not find any reviews online, try to find some small desktop computer shops in your local area. If they do not have a good reputation, do not buy from them. This is one of the easiest ways to find a small shop that is honest and sells good quality computers. The last thing you want is to get a really poor quality computer and then have to send it back because the problem was too big for it to fit.
When you find the shop that you think is honest and sells good quality small form factor PC, make sure that they have a return policy. If they do not offer one, do not get your money back. This is the easiest way to find a shop that is trustworthy. If the owner tells you that they cannot transfer your money back to your credit card, then you might want to look around a little bit further. They might be able to work something out with you. If they won't give you any kind of information, then you should probably consider going somewhere else.
To make it easy on yourself, you will want to find a small PC shop that offers a secure payment site. This will make it so that your money will be safe and you will not have to worry about losing it. If you use a secure site, then your computer will be safe. You will be able to get the computer that you want without worrying about the shop stealing your money. This is one of the easiest ways to shop for a computer. You can get more enlightened on this topic by reading here: https://en.wikipedia.org/wiki/Minicomputer.