I just went through the exercise of outfitting my home lab, and I think $200-300 is a bit low.  Most of the stuff on ebay that goes super-cheap is just broken.  You&#x27;ll spend a lot of time debugging and fixing stuff that is unrelated to your experiment.<p>For the centrifuge, I&#x27;d do 3d-printed rotor on a dremel (<a href="https:&#x2F;&#x2F;diybio.org&#x2F;tag&#x2F;3d-printing&#x2F;" rel="nofollow">https:&#x2F;&#x2F;diybio.org&#x2F;tag&#x2F;3d-printing&#x2F;</a>) I use this already to spin down cells and is... cheap and not very safe.<p>You didn&#x27;t mention an autoclave- that&#x27;s needed to make sure all your buffers and equipment aren&#x27;t contaminated.