Case in point: I have an HF 2-tube transmitter project on the bench (on hold now due to new shop construction).
The power transformer alone was $49, and the case that holds it was $40. When done, I could have
just bought an old DX-40 and saved a LOT of money.
I would also add, that VHF/UHF transceiver homebrewing is for VERY EXPERIENCED hams. I don't
know your experience level - but given your question, I'd surmise you're more towards the beginner
side of things. That's not a good place to learn to homebrew.
As posted above, build something to build it - for the fun of doing it.
And if you just want a cheap radio to get on VHF, a Baofeng UV-5R is $49 all over the web and will
get you on 440 and 2m - then you can put your homebrew skills into an antenna or multiple antennas.
Just some thoughts....
My site: www.W7UUU.net - it's not all about yew, you ewe!