Amazon has Sony SRS-XB21 Portable Wireless Bluetooth Speaker, Black (SRSXB21/B) in used-like new condition for $25.99 ($39.80 saving!) after %20 discount when Amazon Warehouse is chosen as the seller.
https://www.amazon.com/gp/offer-l…dition=all
Alternatively, SRS-XB31 or SRS-XB41 could be chosen in different colors and varying amounts of discount, most being eligible for %20 Amazon Warehouse discount.