I managed to get this near perfect Blue 'Play it Loud' GameBoy for just €60! Normally these blue units (which along with the Japanese White version) are one of the 2 rarest
Nintendo Game Boy Advance SP - Blue | Back Market
Nintendo Game Boy Color Toys 'R Us Limited Edition Ice Blau Handheld-Spielkonsole online kaufen | eBay
Custom Backlit Nintendo Gameboy Color Clear Blue by - Etsy
GAMEBOY ADVANCE SP Blue Nintendo w/Genuine Charger Tested GBA Game | eBay