“Engine replaced at 1500hrs”
Why? The TBO of the Rotax is 2000hours. If you go LAA many run past 3000. If you go homebuilt recon on about £300 a year for maintenance over the first 5 years at least.
100 hour on the Rotax (assuming 70% or more Mogas use) involves 3L of oil £20 and a filter £8. You will also need a bit of locking wire etc.
Rod1