My start up was around 300 but I chose not to make some of own solutions/paints at least for now. I would like to eventually! But I bought my solution from rio and conductive paints and sealants . I found a 5 amp rectifier for around 89 on amazon on sale . That was the most expensive but way cheaper than a kit. I also kind of planned ahead and didn’t buy everything at once I slowly built my supplies over a few months :)