I'm assuming you mean how valuable people would consider it.
Very Valuable - Well at least with normal people
1. 6 IVS. Perfect IVs. 100% of traders would jump at the chance of a Perfect IV Pokemon provided it wasn't Sunkern or something dodgy like that.
2. Solid moveset. Replace Fly with something like Earthquake or V-Create, and you'll go from Solid to a Great moveset.
3. It's a Shiny. For some reasons people love shiny Pokemon and to show off and in the middle of the battle go OMG I HAVE A SHINY POKEMON U R SCREWED <3
4. It's a legendary Pokemon.
^ That's also why I said 'normal people' because you have some people who go like;
OMG LEGENDARIES ARE SHEEET AND FOR N00BS. ONLY NUBS USE LEGENDARIES SO WHY WOULD I NEED SOMETHING SO NUBBY.
Anyway, tbh I think you could probably get almost anything you wanted for that. Well provided it isn't like. Fully EV Trained, Level 100, 6 IV Shiny Rayquaza :I since yours is only level 80 :I.