Buying PS3 from CEX?

Anyone bought PS3 from them, especially the fat ones with PS2 support.

What i hear is they do not take in opened consoles and they keep the void sticker intact because they do not have their own stickers, so these old consoles have never been clean from inside and fans probably clogged with dust and the GPU is known to get hot and repaste is important. So does it mean buting one of these ps3 from them would most likely result in a failure that requires return if it happens within the warranty period?

what i know is most sellers would refurbish old consoles, clean the internals, repaste if needed and stick on their own warranty stickers which means buying from these sellers might be a better option? but most sellers wont offer 2 years warranty.