It is totally possible to be UL on a budget. Being SUL/XUL on a budget gets a bit harder if you want to have gear that will endure.
First you have to ask yourself why you want hiking poles. Do you want them because you see videos of others using them? Have you read somewhere that they help you gain mileage? Do you have bad knees/back and feel they will help you? Do you cross a lot of creeks?
So many people these days throw around the quote about how "a pound on the foot is like 5 on the back" - and than if you look at these same people they have gone and added an ounce or two of duck tape onto their $160 dollar GG TL4's or their $145 Yana's that both claim to be the lightest weight poles out there. Makes me scratch my head. My point is that every single step you take results in lifting weight by your legs, because of your shoes. The same goes for hiking poles. Every step you take results in lifting weight with your arms because of hiking poles. The heavier the poles the more weight your body has to lift, the more calories it has to burn, the more food you have to carry, the more your backpack has to weigh.
You also do not need to carry hiking poles to keep your tarp/shelter up either. Many hikers have stopped using hiking poles and have gone over (more like 'back') to dedicated poles (only now carbon fiber ones that are much stronger and much lighter than they were a few years ago) and two of them weigh less than a single LT4 hiking pole. Sweet, you just saved yourself 100+ grams!!
To specifically answer your question "do you get what you pay for"?
In regards to quality, mostly the answer to that would be "no". At the end of the day a leki pole is pretty much a leki pole and a BD is pretty much a BD.
In regards to weight, "yes" you will get what you paid for. If you follow the logic I just presented, remembering that weight (be it lifted by your feet or your arms) is still weight, the difference a 580 gram pair of poles and a 200 gram pair of poles is rather significant. Many of us spend hundreds of dollars trying to decrease our Total Pack Weight by 300 grams, so why ignore something as simple as a pair of poles as a means to do so.
My goal here is to provide education on getting your entire backpack setup lighter and to get you to think about how to accomplish that. That is what this website is all about after all. Others are going to approach this issue from a different perspective and you should take their advise as well. I have no knowledge of your experience, your gear, where you hike, or anything else.
John B. Abela