Bought my first computer for $2200 in 1983 I think it was. An Atari 400 with massive 16k memory. Then I upgraded to the 130 xe. Then I went Commodore 128 and then to Amiga 500. The first thing I did with the 500 was take the processor out and put in a 286 board and 68010 processor. That was start of modifying computers. When Commodore went bust I switched to PC and built my first computer a 486 unit. Over the years I have built around 50 units for friends and family and maintain the ones I made.
Thats my hobby.
Heavy Plant mechanic by trade