yep a cheapie (meaning poor quality) barlow means the expensive eyepiece is now a cheapie eyepiece, maybe an 8" 'scope is a better idea, sell yours put the cash into an 8"
but I might add the eyepieces are only going to be as good as the mirrors let them be, me Id just get UO HD's, maybe 2 of them and hit someone up for a good barlow for chrissie/birthday/anniversary whatever, I wont be looking at Rolls Royce eyepieces till I have Rolls Royce mirrors