YMMV Umbrella base $14.97 on clearance @ Sports Authority B&M
Saw this a while ago at The Sports Authority but forgot to post it. Went to TSA to get something else and still saw a stack of them on clearance - YMMV. Attached picture is from store in ZIP 03103 - in back near the camping equipment.
25lb Umbrella Base, 10" tall, 2" diameter (adjustable by knob)
Made by Regent (China), model UB205 (could not find on TSA web site)
$14.97 on clearance (originally $29.99)