The best incubators are the one you can grow into, trust me if you start breeding you will get more an more clutches over the years so the best is to get ready now.

Building your own will be easy and very cost effective, the most expensive piece of equipment will be your thermostat which is the single MOST important thing when it comes to incubation.

You can easily find a fridge for free as for the rest you will only need a T-Stat, Heat tape, PC fan, and egg tubs.