You’re going to spend how much on a thermocycler? That’s crazy!
Why not get miniPCR, a beautiful PCR kit with some awesome software for just $650 or OpenPCR, a thermocycler kit for just $500.
Not cheap enough? Go the full DIY and you can build on for less than $100.
Do you just refuse to spend any money on a thermocycler? Fair enough, you can basically make one out of a lightbulb and a fan.