u/False-Year1115

So i pulled a Mega Gengar ex #284 and want to grade it for my collection, but i want it to be future proof in case i decide to sell one day in the future. It has a small scratch on the back so i think it will get a psa 9. Is that still worth grading? it COUld get a 8 but since the small scratch is the only trhing i notice wrong with it, i think itll be a 9.