
A Puggle is
not a breed. It is a crossbreed/mongrel/mutt (call it what you will), so why do you want to part with huge amounts of cash for one? Rescue centres are full of accidental crosses in need of good homes, and will cost much less.
People who breed intentional crosses like this do so for the money, not for the love of either breed and the parents are unlikey to have undergone the relevant health tests for their breed, you thereforehave no idea if they are healthy or if they carry genetic diseases that will only become apparent as they grow and age. I don't know about you, but if I am spending a large amount of money on a companion to spend, hopefully, 12-15 years with me, I want to be as sure as I can be that they are going to be healthy.
With crossbreed litters, you have no idea what the puppies will turn out like as each will inherit a different combination of features from the parents. So, the puppy you get will likely be nothing like the one you fell in love with in America. Also, pugs and beagles are such vastly different breeds, you cannot know what your pup will be like as an adult. Your pup could inherit the worst traits of both breeds and you may end up, for example, with a dog with the energy and drive of a beagle but with the respiratory problems of a pug.
If you are familiar with the term 'puppy farming', this is generally how Puggles and other 'designer' crossbreeds are produced. If you are not, I suggest you do a quick search on Google (or the like) for it and ask yourself if it is a practice that you feel comfortable supporting?