Just check coupons out (with price alert and history). Let’s see what best price is ATM.
Material: ABS, Packing size: 42*42*22.8cm, Weight: 1.8KG, Color: white, fiber lining, Product size: 40.8*38.6*37.1cm, Applicable object: Cat, PP
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. I have no active coupons for you right now.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B, 1199aa, e2bcea, vipupgrade8, TTxBG10, BG1156, 98f6c0, aff7off, bgssaff9, AFfbG10, BGBFAFF2019, BGCITYADS2019, BGPDCSD, BGHOMEG12, BGAFF10OFF, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BGHome15%, BgcLuBofErtA10, BGCuponation10, 7bcdf9, BGHONEY2110, BANGGOODSD, 6GSGIT
(there’s a little possibility that old coupon will work)
Price history and price alert
Here is price history (for all/most countries) for Xiaomi BOSS Cat Spinning Nest Bed.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).