I'd go back and get it if you can . Those 518's are nice tables, I have one and mine is missing the feet also. Some guy on eBay puts custom wood plinths under 518's and gets crazy money for them. $38 is a steal.
I, too found one from the original owner for 25. Asked if they had any audio gear. Out she comes with the turntable and a 680. Feet were gone, replaced them with half tennis balls. For 38 I'd be buying them all day.