Chewy has the Armarkat GleePet 57" Faux Fur Cat Tree and Condo for $55 with free shipping. Can safely hold up to 40 pounds of weight and has 5 levels for perching.
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Chewy has the Armarkat 38" Faux Fleece Cat Tree (Sky Blue) on sale for $48.40 + $1.65 filler (to reach free shipping minimum) = $50.05 with free shipping.
Amazon has the New Age Pet ecoFLEX Albany Outdoor Feral Cat House Shelter (Tan) on sale for $60 with free shipping. Same price at Chewy.com with free shipping.
Features weatherproof contruction and two entry/exit points. Measures 21.8" x 19.1" x 20.2".
Chewy has the Go Pet Club 106" Floor-to-Ceiling Faux Fur Cat Tree & Condo (Beige) for $55 with free shipping. Has 3 condos and 11 scratching posts.