I hear ya there brother!
Originally, I thought I would just stick with the 238 and that good enough.
Then I started ebaying for the 136 cause the fanboy-completist in me took over.
I thought, "nah, why pay that ridiculous amount for the boxed version nowadays? You'd have to be half cracked!"
Then of course, I slowly started buying all the parts I needed to build him, which now in retrospect cost nearly 3/4 of what the damn boxed version is! And I'm missing hands still!!
Kinda stupid on my part, but once you start with the bits and pieces, you've gotta finish the build.