This post explains my horrible experience and is meant to inform people about how easy it is to lose money using Coinbase services trading Crypto. I have brought the issue up with Coinbase representatives in the past month, and after several inquiries, I still have not heard back from them. The app, Coinbase, is faulty and is set up for investors to lose their money quickly. I am adding pictures as proof of my claims to such transactions accruing. Also, to reveal how other, more ethical apps such as Robinhood handle such circumstances. Moreover, This post tells my experience solely, as I have no affiliation with any mentioned parties. One day after work, I was sitting outside while I decided to buy some AMP Crypto on the Coinbase app; the price that day was $0.10; I set a limit order to buy $500 AMP at $.090, at least so I thought. After submitting the order, I got a notification instantly that my order had been filled! I knew something was wrong, so I checked the receipt from Coinbase right away, and I found that I entered the price at $.90 instead! I was in a state of shock; I wanted to fix the problems, so I thought it would bring my average cost down if I bought more! I put another order then; again, the same thing happened when I missed one zero after the decimal point; I know it! I reached out to Coinbase and informed them of such transactions occurring and how. I went on other apps and sought to resolve what would happen if you entered a limit order to buy, exceedingly over the market price. I have shown in the attached pictures in this post an example of the app Robinhood. Robinhood app caught the mistake right away and informed me of it, while Coinbase did not! Again, I reached out to Coinbase and explained the faultiness of their business setup, and they chose to ignore me still some more! The receipt from Coinbase, which I screenshotted and included in this post, shows that Coinbase bought the AMP at the market price of $ 0.10 and kept the extra AMP Crypto bought with my money and gave me a fraction, in addition to taking out fees! I wonder how many times a day this occurs as people lose hundreds, if not thousands of dollars in Coinbase in a split of a second and may not even realize they have.