Many bulk MRE options say that they are the best, but only a few of them will be good enough to trust in. The way to find out if you're going to get scammed is to make sure you learn more first about someone's company.
Sellers are generally going to be easy to find, you just need to search for something like "MREs for sale" on a search website. Then when you get a list of people that are offering this you can then begin to check over each option you have. There should be choices in terms of the quantity of what you can buy and you also want to see about picking out which meals you can get. Otherwise, you may be left with some you know you won't like and that's basically like wasting a lot of your money for no reason.
Bulk purchases are meant to last, but there are expiration dates on MREs so you can't just get as many as you can and hope they last. Usually, you can learn from the seller when to expect them to go bad so you are not eating anything that is not good. Some of them are going to last longer than others, so you need to work on giving away or eating the ones that you know won't last too long. Keep a list of when you need to use everything by and you can give stuff to friends or family if you need to.
The bulk MRE sellers online, such as XMRE, can be a good way to get these types of meals for any reason but you have to know they are charging a fair price. When you want to make sure you're not getting ripped off, always work with companies that have some kind of guarantee.