I've been flying my scratch built for 10 years, now, so costs have increased. But I spent $28,000 all-in, including materials and tools. AeroVee 2.1, smoke system, MGL Xtreme Mini, transponder, MGL panel mount radio, uAvionix ADSB in/out, ELT, polished finish (Rustoleum rattle can paint on cowl and ...