Thumb Score: +10 Amazon [amazon.com] has 4-Count Oral-B CrossAction Electric Toothbrush Replacement Brush Heads Refill for $30.12 - $10 when you 'clip' the coupon on product page = $20.12. Shipping is free with Prime or on $35+ orders. Price: $15.88 lower (44% savings) than the list price of $36 $19.82 lower (50% savings) than the previous price of $39.94