Well, I did buy a VIC20 from Toys R Us in 1982. But that never did anything other than teach some very basic code writing. I paid $150 for it
My first real computer was a Packard Bell 486SX that cost $1,200 at Montgomery Ward in 1994.
My current computer is a Dell dual core, but I don't remember what the processor is, but I bought it in 2007 for $1,500 and it still has more capability than I need. My wife things I should get a new one, but I don't see a reason too.
As for my next one, both my kids built their own PCs I may consider that. Or maybe an off the shelf unit from Walmart or Dell