Jet.com offers the Armarkat 66" Cat Tree Furniture Condo in Sky Blue for $68.40 with free shipping. (Note: You can also receive additional discounts by waiving free returns or by choosing select payment options. Hayneedle charges the same price, as does Amazon, with low stock.) That's the lowest total price we could find by $4. It measures 66" x 38" x 24", and features a pressed wood construction, faux fleece covering, and 40-lb. capacity.
Of note, Amazon offers the Armarkat 62" Cat Tree Furniture Condo in Ivory for $60.99 with free shipping. (Chewy charges the same price.) That's the lowest total price we could find by $18. It measures 62" x 28" x 27".