Aiseh bro, sorry to hear about your PSP. IMO 8 dead pixels and RM50 are not worth it. But if you can live with it then it's fine.

I heard you looking for a second PSP? next time don't trust the black screen, the black screen wont reveal the appearance of dead pixel as dead pixel are black. Be sure to check with white and black screen. White screen will reveal any dead pixel, while black screen will reveal any wrong color pixel like blue, red or green.

Good luck.