The Phillies didn't give up much to the Cubs for Manny Trillo (plus Greg Gross). And a couple of weeks after trading Alexander to the Cubs, they traded 36 year old Dode Paskert to them for Cy Williams, who played 13 years for the Phillies and led the league in homers three times.
But the Phillies' trade record with the Astros is rally good. They stole Curt Schilling and Bobby Abreu. Bourn for Lidge worked out quite well. And the Phillies didn't end up giving up much for Hunter Pence as it turns out.
(Ironically, they then got nothing back when they traded Schilling, Abreu, and Pence.)