It's not custom made - nearly all S series guitars bear that logo(apparently it means "Prestige" or something in Japan), but all the same S5407s are pretty damned scarce. I don't think $1k is overpriced at all if it's in good condition, and that's saying a lot since everyone here knows I'm a cheapskate. LOL
Again, these are pretty rare to stumble across. Take into consideration the condition and whether or not you get a case before making a purchase.