Holy cow, I have had mine for 15 years, at least, and I use it alot! I paid $80 for it and I am hoping to get my $'s worth out of it. I figure another 50 years should about do it. By then I probably really won't care if my fabrics are feeding evenly, but I WILL still be quilting.
I do brush mine off for lint and oil everything that looks like it needs oil.