I've taken my time choosing my components for this build where the objective was not the cheapest but the best value for branded parts. Some of the choices in this value bracket were easy (like the mamba stack and emax eco motors) but some like frame and props have a lot to do with personal preference. Actual cost of the build was about $150 using typical coupons and discounts.

More details on the why I chose the parts I did and the alternatives here:
https://www.quadifyrc.com/reviews/the-sweet-spot-5-freestyle-part-1-component-choice
Review of all the parts, DVR, HD footage etc. here:
https://www.quadifyrc.com/reviews/the-sweet-spot-value-5-freestyle-part-2-full-review