Heh, then you have me...I use a 1927 Singer 66 treadle I paid 50 bucks for (most of my machines, including my industrual over lock were $50 or less). My most expensive machine is $400...and it's my industrial.
If you can afford the TOL machines and it's what you want, more power to you. I'll be happy for you. I just don't need one or want one.
Besides, who is going to be impressed with what I have? I share about my shop because I sew there and it's the only space that is pretty much all mine and I've wanted a studio since I was a kid, but everything else I've got is like why, though?