Buy your dumbells from walmart, dead serious. Make sure they have an adjustable rubber handle, not the metal handles. You can add plates as you feel. I bought 2 dumbbell handles which are customizeable from walmart, and that's all I have used for the last 5 years. You then buy plates from walmart as well, I can make any dumbbell from 5lbs to 150lb dumbells, and I got all of that at walmart for 300 dollars thats it, if you want I could show u a video of what I mean, if it would help.