That's the best price we could find for a similar item by up to $2. Shop Now at eBay Tips 55cm for $13.99 ($23 off). 65cm for $14.69. ($23 off). 85cm for $16.29 ($23 off). Available in several colors and sizes (Blue pictured). Sold by millionshare via eBay. Features 440-lb. weight capacity includes 1 yoga ball, 1 air pump, 2 ball stoppers, 1 pneumatic plug