You can just check at Amazon, they usually have great deals. 

Building on the earlier suggestion, Amazon is a solid baseline for unlocked prices, but in my experience, the Best Buy trade-in system often yields better net results for the Google Pixel 9 Pro XL 128GB Obsidian. Over the years, I've tried many different retailers, and the Google Store usually has the most aggressive promotional credits for older Pixel hardware. If you have a Google Pixel 7 Pro 128GB to trade, you might see credits high enough to cut the cost in half. Carrier deals from Verizon or AT&T are technically the cheapest—sometimes even $0 with a new line—but you have to factor in the 36-month bill credits. For those who want more storage, I'd suggest waiting for a promo on the Google Pixel 9 Pro XL 512GB Hazel because they frequently run double the storage deals where the higher capacity model costs the same as the base. its worth crunching the numbers on the total cost of ownership over two years rather than just looking at the sticker price... basically, always check the fine print on those carrier trade-ins.

Amazon